essay of type of pollution

Essay on Pollution for Students and Children

500+ words essay on pollution.

Pollution is a term which even kids are aware of these days. It has become so common that almost everyone acknowledges the fact that pollution is rising continuously. The term ‘pollution’ means the manifestation of any unsolicited foreign substance in something. When we talk about pollution on earth, we refer to the contamination that is happening of the natural resources by various pollutants . All this is mainly caused by human activities which harm the environment in ways more than one. Therefore, an urgent need has arisen to tackle this issue straightaway. That is to say, pollution is damaging our earth severely and we need to realize its effects and prevent this damage. In this essay on pollution, we will see what are the effects of pollution and how to reduce it.

Effects of Pollution

Pollution affects the quality of life more than one can imagine. It works in mysterious ways, sometimes which cannot be seen by the naked eye. However, it is very much present in the environment. For instance, you might not be able to see the natural gases present in the air, but they are still there. Similarly, the pollutants which are messing up the air and increasing the levels of carbon dioxide is very dangerous for humans. Increased level of carbon dioxide will lead to global warming .

Further, the water is polluted in the name of industrial development, religious practices and more will cause a shortage of drinking water. Without water, human life is not possible. Moreover, the way waste is dumped on the land eventually ends up in the soil and turns toxic. If land pollution keeps on happening at this rate, we won’t have fertile soil to grow our crops on. Therefore, serious measures must be taken to reduce pollution to the core.

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Types of Pollution

Air Pollution
Water Pollution
Soil Pollution

How to Reduce Pollution?

After learning the harmful effects of pollution, one must get on the task of preventing or reducing pollution as soon as possible. To reduce air pollution, people should take public transport or carpool to reduce vehicular smoke. While it may be hard, avoiding firecrackers at festivals and celebrations can also cut down on air and noise pollution. Above all, we must adopt the habit of recycling. All the used plastic ends up in the oceans and land, which pollutes them.

So, remember to not dispose of them off after use, rather reuse them as long as you can. We must also encourage everyone to plant more trees which will absorb the harmful gases and make the air cleaner. When talking on a bigger level, the government must limit the usage of fertilizers to maintain the soil’s fertility. In addition, industries must be banned from dumping their waste into oceans and rivers, causing water pollution.

To sum it up, all types of pollution is hazardous and comes with grave consequences. Everyone must take a step towards change ranging from individuals to the industries. As tackling this problem calls for a joint effort, so we must join hands now. Moreover, the innocent lives of animals are being lost because of such human activities. So, all of us must take a stand and become a voice for the unheard in order to make this earth pollution-free.

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FAQs on Pollution

Q.1 What are the effects of pollution?

A.1 Pollution essentially affects the quality of human life. It degrades almost everything from the water we drink to the air we breathe. It damages the natural resources needed for a healthy life.

Q.2 How can one reduce pollution?

A.2 We must take individual steps to reduce pollution. People should decompose their waster mindfully, they should plant more trees. Further, one must always recycle what they can and make the earth greener.

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Types of Pollution

Pollution is defined as introducing harmful substances (solid, liquid, or gas) or any form of energy (light, heat, sound, or radioactivity) into the environment. The harmful elements that damage air, water, and land quality and cause pollution are called pollutants.

Pollution is primarily human-made, but nature can have an adverse effect also sometimes acts as a source of pollution.

What are the Different Types of Pollution: Causes and Effects

The three major types of environmental pollution are air, water, and soil. Besides these three main types, there are noise, light, thermal, and radioactive pollutions.

1. Air Pollution

The air in our atmosphere has a roughly stable chemical composition consisting of nitrogen, oxygen, argon, carbon dioxide, and trace amounts of other gases. Any change in the air composition due to the addition of unwanted gases such as sulfur dioxide, carbon monoxide, and nitrogen oxides, chemicals, particulate matter, and biological molecules is called air pollution.

Among all other types of pollution, air pollution is found to have the most diverse impact on Earth.

Sources/Causes

Air pollution can happen from both human-made (anthropogenic) and natural sources. Some of the significant sources of air pollution are given below:

Burning of fossil fuels such as coal, oil, and natural gas
Exhaust from automobiles and industries
Indiscriminate cutting of trees (deforestation)
Wildfires resulting from burning stubble and farm residues
Release of methane from microbial decay
Excessive discharge of greenhouse gases like carbon dioxide and nitrous oxide
Chlorofluorocarbons (CFCs) released from aerosols sprays, refrigerants, and air conditioners
Release volcanic ash and gases
Respiratory disorders in humans such as asthma, lung cancer, chronic bronchitis, and other lung problems
Formation of smog that reduces visibility
Formation of acid rain
Depletion of the ozone layer
Global warming
Hazards to wildlife
Planting of trees (afforestation) purifies the air
Use of renewable energy such as sunlight and wind energy and reducing dependence on nonrenewable sources such as coal, petroleum, and natural gas
Increasing efficiency in energy usage
Use of eco-friendly vehicles
Cleaning of industry emissions before their release into the atmosphere
Reducing dependence on vehicles

2. Water Pollution

Water pollution occurs when toxic pollutants and particulate matter are introduced into water bodies such as oceans, rivers, lakes, ponds, and aquifers, making them impure and toxic. These contaminants are primarily generated by human activities and sometimes by natural disasters.

Among all other types of pollution, water pollution is found to have the maximum adverse consequences on the ecosystem.

Industrial and domestic sewage discharge
Oil spills and natural gas leakage into water bodies from underground sites called petroleum seeps
Social practices such as washing, bathing, and littering in water bodies and religious practices
Agricultural runoff containing pesticides, fertilizers, herbicides, slurry, debris, and manures
Mining and drilling sometimes make underground water contaminated
Floods and storm carrying dust and debris to the water bodies
Algal bloom (eutrophication) caused due to an increase in nutrients of the water bodies
Reducing dissolved oxygen in the water bodies thus disrupting aquatic life
Disturbing the pH and salinity of the water bodies leading to loss of aquatic life
Increasing the risk of water-borne diseases such as hepatitis, cholera, diarrhea, and typhoid in humans
Increasing the level of toxins and pollutants at each successive level of the food chain (biomagnification)
Proper disposing of domestic, agricultural, and industrial wastes before releasing them into water bodies
Using sewage treatment methods such as precipitation, ion exchange, reverse osmosis , and coagulation
Reducing reusing, and recycling of water
Using plants such as water hyacinth that absorbs heavy metals in areas contaminated with radioactive pollutants

3. Soil Pollution

Sometimes called land pollution, it refers to the degradation of land quality due to unwanted chemicals and other factors in the soil. Such chemicals change the soil’s chemical and biological properties, thus affecting plant growth. Green plants, being the primary producer, absorb those pollutants, which are then passed through the food chain, affecting the whole ecosystem.

Soil pollution can seep into groundwater or run off to the nearest streams and lakes, creating a vicious pollution cycle.

Intensive farming leading to the overuse of agrochemicals such as pesticides, fertilizers, herbicides, slurry, debris, and manures
Improper disposal of wastes from paper mills, sugar factories, petroleum, and chemical industries
Dust particles such as silica dust
Urban wastes consisting of garbage and rubbish materials, dried sludge, and sewage from households and commercial bodies
Accidental oil spills from oil refineries
Radioactive pollutants such as radium, thorium, and uranium from power plants
Acid rain, increasing the acidity of the soil
Deforestation that increases soil erosion causing low soil fertility
Loss of soil fertility making it unfit for agriculture
Adverse effect on the growth of flora and fauna in the soil
Groundwater pollution
Increasing the salinity of the soil, making it unfit for agriculture
Causing respiratory problems, neuromuscular blockage, and various forms of cancer, especially lung cancer
Causing nausea, headache, eye irritation, skin rash, and depression
Use of organic matures instead of artificial fertilizers in agriculture
Planting of trees (Afforestation)
Treating solid wastes such as garbage, domestic refuse, and industrial materials before dumping them in landfills
Recovering and recycling of materials such as plastics, cloth, and glass before dumping

4. Other Types of Pollution

1. Light Pollution

Light pollution refers to the excessive amount of light in the night sky. It occurs due to excessive, misdirected, and inefficient lighting systems by humans. It is also called photo pollution that disrupts the ecosystem by reducing the distinction between night and day.

Although light pollution seems to have a lesser impact than any other form, it is expected to have consequences similar to air or water pollution.

Increased energy consumption through over-illumination from artificial light sources such as street lighting, domestic lighting, and garage
Poor planning by engineers while placing street lights and signage
Overpopulation increases electricity consumption, which increases glare
Smog and fog due to air pollution reflect light emitted by cities, making the surrounding look much brighter
Produce behavioral changes in animals. Nocturnal animals, who are active at night, venture out during the daytime. In contrast, diurnal animals, which are active during the day, remain active at night
Affecting migration pattern in seasonal birds
Difficulty for astronomers to see the stars properly
Affecting newly hatched turtles that rely on starlight to guide them from the beach to the ocean. They often head in the wrong direction.
Causing flowering and developmental patterns in plants
Inducing smog by destroying nitrate radicals, helping in the dispersion of smog, and causing air pollution
Inducing a delay in melatonin secretion in humans, which delays sleep at night
Reducing the use of decorative lightings that produce more light and consumes more energy
Use of covered bulbs or light that face downwards
Switching to an LED light that reduces luminance without compromising visibility
Proper planning during installation of street lights and signage
Switching off street lights during daytime
Using glare-free lighting in the outdoors
Stopping light-trespass

2. Noise Pollution

It refers to the excessive amount of sound in the surroundings disrupting the natural balance. The acceptable amount of sound is about 60 to 65 decibels, which is the same as our everyday conversation.

Sound levels above 85 decibels are harmful depending on the duration of exposure. Noise above 140 decibels can cause permanent hearing loss. Also, the duration of exposure to the sound is found to have negative health impacts.

Noise from heavy machines in factories, mills, and industries
Traffic noise from vehicles (trains and buses) and airplanes
Construction noises from boring and drilling machines
Noise from firecrackers and loudspeakers in social events
Household noises from television, mixer grinders, and music systems
Loss of hearing and behavioral disorders
Loss of focus on work leading to low work output
Stress and Hypertension (high blood pressure)
Lack of sleep and fatigue
Difficulty in speech and impairment
Hearing disorders like tinnitus
Songbirds, such as robins, fail to communicate and find food
Disrupting sonar, used by marine animals to communicate and locate food
Honking in public places like hospitals, academic institutions such as schools and colleges should be banned
Installing adequate soundproof systems in commercial buildings and hospitals
Afforestation as trees can absorb sound
Restricting the use of firecrackers during festivities and doing open public rallies

Apart from the types of pollution discussed, there are other forms of pollution called thermal or heat pollution and radioactive pollution .

Thermal pollution is caused due to excessive heat in the environment released from industrial power plants, deforestation, urban sprawl, and air pollution. It increases the Earth’s atmosphere causing drastic climate change and extinction of wildlife. In contrast, radioactive pollution results from accidental leakage from nuclear power plants and improper disposal of nuclear wastes. It can cause massive, long-lasting impacts such as cancer, infertility, blindness, and congenital disabilities.

Ans . Air pollution.

Ans . The seven types of pollution are air, water, soil, light, noise, thermal, and radioactive pollution.

Ans . Smog is a type of air pollution. It is a combination of fog and particulate matter that remain suspended in the air.

Ans . Carbon monoxide is a gaseous air pollutant.

Ans . Groundwater pollution can occur due to chemical spills from industries, household runoff during transportation, illegal dumping of wastes, mining operations, and atmospheric depositions.

Pollution – Nationalgeographic.org
Pollution: Types, Sources and Characteristics – Open.edu
Pollution Facts & Types of Pollution – Livescience.com
Pollution: Sources & Types – Geo.libretexts.org
How Many Types Of Pollution Are There? – Worldatlas.com

Article was last reviewed on Friday, February 17, 2023

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Front Public Health

Environmental and Health Impacts of Air Pollution: A Review

Ioannis manisalidis.

1 Delphis S.A., Kifisia, Greece

2 Laboratory of Hygiene and Environmental Protection, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece

Elisavet Stavropoulou

3 Centre Hospitalier Universitaire Vaudois (CHUV), Service de Médicine Interne, Lausanne, Switzerland

Agathangelos Stavropoulos

4 School of Social and Political Sciences, University of Glasgow, Glasgow, United Kingdom

Eugenia Bezirtzoglou

One of our era's greatest scourges is air pollution, on account not only of its impact on climate change but also its impact on public and individual health due to increasing morbidity and mortality. There are many pollutants that are major factors in disease in humans. Among them, Particulate Matter (PM), particles of variable but very small diameter, penetrate the respiratory system via inhalation, causing respiratory and cardiovascular diseases, reproductive and central nervous system dysfunctions, and cancer. Despite the fact that ozone in the stratosphere plays a protective role against ultraviolet irradiation, it is harmful when in high concentration at ground level, also affecting the respiratory and cardiovascular system. Furthermore, nitrogen oxide, sulfur dioxide, Volatile Organic Compounds (VOCs), dioxins, and polycyclic aromatic hydrocarbons (PAHs) are all considered air pollutants that are harmful to humans. Carbon monoxide can even provoke direct poisoning when breathed in at high levels. Heavy metals such as lead, when absorbed into the human body, can lead to direct poisoning or chronic intoxication, depending on exposure. Diseases occurring from the aforementioned substances include principally respiratory problems such as Chronic Obstructive Pulmonary Disease (COPD), asthma, bronchiolitis, and also lung cancer, cardiovascular events, central nervous system dysfunctions, and cutaneous diseases. Last but not least, climate change resulting from environmental pollution affects the geographical distribution of many infectious diseases, as do natural disasters. The only way to tackle this problem is through public awareness coupled with a multidisciplinary approach by scientific experts; national and international organizations must address the emergence of this threat and propose sustainable solutions.

Approach to the Problem

The interactions between humans and their physical surroundings have been extensively studied, as multiple human activities influence the environment. The environment is a coupling of the biotic (living organisms and microorganisms) and the abiotic (hydrosphere, lithosphere, and atmosphere).

Pollution is defined as the introduction into the environment of substances harmful to humans and other living organisms. Pollutants are harmful solids, liquids, or gases produced in higher than usual concentrations that reduce the quality of our environment.

Human activities have an adverse effect on the environment by polluting the water we drink, the air we breathe, and the soil in which plants grow. Although the industrial revolution was a great success in terms of technology, society, and the provision of multiple services, it also introduced the production of huge quantities of pollutants emitted into the air that are harmful to human health. Without any doubt, the global environmental pollution is considered an international public health issue with multiple facets. Social, economic, and legislative concerns and lifestyle habits are related to this major problem. Clearly, urbanization and industrialization are reaching unprecedented and upsetting proportions worldwide in our era. Anthropogenic air pollution is one of the biggest public health hazards worldwide, given that it accounts for about 9 million deaths per year ( 1 ).

Without a doubt, all of the aforementioned are closely associated with climate change, and in the event of danger, the consequences can be severe for mankind ( 2 ). Climate changes and the effects of global planetary warming seriously affect multiple ecosystems, causing problems such as food safety issues, ice and iceberg melting, animal extinction, and damage to plants ( 3 , 4 ).

Air pollution has various health effects. The health of susceptible and sensitive individuals can be impacted even on low air pollution days. Short-term exposure to air pollutants is closely related to COPD (Chronic Obstructive Pulmonary Disease), cough, shortness of breath, wheezing, asthma, respiratory disease, and high rates of hospitalization (a measurement of morbidity).

The long-term effects associated with air pollution are chronic asthma, pulmonary insufficiency, cardiovascular diseases, and cardiovascular mortality. According to a Swedish cohort study, diabetes seems to be induced after long-term air pollution exposure ( 5 ). Moreover, air pollution seems to have various malign health effects in early human life, such as respiratory, cardiovascular, mental, and perinatal disorders ( 3 ), leading to infant mortality or chronic disease in adult age ( 6 ).

National reports have mentioned the increased risk of morbidity and mortality ( 1 ). These studies were conducted in many places around the world and show a correlation between daily ranges of particulate matter (PM) concentration and daily mortality. Climate shifts and global planetary warming ( 3 ) could aggravate the situation. Besides, increased hospitalization (an index of morbidity) has been registered among the elderly and susceptible individuals for specific reasons. Fine and ultrafine particulate matter seems to be associated with more serious illnesses ( 6 ), as it can invade the deepest parts of the airways and more easily reach the bloodstream.

Air pollution mainly affects those living in large urban areas, where road emissions contribute the most to the degradation of air quality. There is also a danger of industrial accidents, where the spread of a toxic fog can be fatal to the populations of the surrounding areas. The dispersion of pollutants is determined by many parameters, most notably atmospheric stability and wind ( 6 ).

In developing countries ( 7 ), the problem is more serious due to overpopulation and uncontrolled urbanization along with the development of industrialization. This leads to poor air quality, especially in countries with social disparities and a lack of information on sustainable management of the environment. The use of fuels such as wood fuel or solid fuel for domestic needs due to low incomes exposes people to bad-quality, polluted air at home. It is of note that three billion people around the world are using the above sources of energy for their daily heating and cooking needs ( 8 ). In developing countries, the women of the household seem to carry the highest risk for disease development due to their longer duration exposure to the indoor air pollution ( 8 , 9 ). Due to its fast industrial development and overpopulation, China is one of the Asian countries confronting serious air pollution problems ( 10 , 11 ). The lung cancer mortality observed in China is associated with fine particles ( 12 ). As stated already, long-term exposure is associated with deleterious effects on the cardiovascular system ( 3 , 5 ). However, it is interesting to note that cardiovascular diseases have mostly been observed in developed and high-income countries rather than in the developing low-income countries exposed highly to air pollution ( 13 ). Extreme air pollution is recorded in India, where the air quality reaches hazardous levels. New Delhi is one of the more polluted cities in India. Flights in and out of New Delhi International Airport are often canceled due to the reduced visibility associated with air pollution. Pollution is occurring both in urban and rural areas in India due to the fast industrialization, urbanization, and rise in use of motorcycle transportation. Nevertheless, biomass combustion associated with heating and cooking needs and practices is a major source of household air pollution in India and in Nepal ( 14 , 15 ). There is spatial heterogeneity in India, as areas with diverse climatological conditions and population and education levels generate different indoor air qualities, with higher PM 2.5 observed in North Indian states (557–601 μg/m 3 ) compared to the Southern States (183–214 μg/m 3 ) ( 16 , 17 ). The cold climate of the North Indian areas may be the main reason for this, as longer periods at home and more heating are necessary compared to in the tropical climate of Southern India. Household air pollution in India is associated with major health effects, especially in women and young children, who stay indoors for longer periods. Chronic obstructive respiratory disease (CORD) and lung cancer are mostly observed in women, while acute lower respiratory disease is seen in young children under 5 years of age ( 18 ).

Accumulation of air pollution, especially sulfur dioxide and smoke, reaching 1,500 mg/m3, resulted in an increase in the number of deaths (4,000 deaths) in December 1952 in London and in 1963 in New York City (400 deaths) ( 19 ). An association of pollution with mortality was reported on the basis of monitoring of outdoor pollution in six US metropolitan cities ( 20 ). In every case, it seems that mortality was closely related to the levels of fine, inhalable, and sulfate particles more than with the levels of total particulate pollution, aerosol acidity, sulfur dioxide, or nitrogen dioxide ( 20 ).

Furthermore, extremely high levels of pollution are reported in Mexico City and Rio de Janeiro, followed by Milan, Ankara, Melbourne, Tokyo, and Moscow ( 19 ).

Based on the magnitude of the public health impact, it is certain that different kinds of interventions should be taken into account. Success and effectiveness in controlling air pollution, specifically at the local level, have been reported. Adequate technological means are applied considering the source and the nature of the emission as well as its impact on health and the environment. The importance of point sources and non-point sources of air pollution control is reported by Schwela and Köth-Jahr ( 21 ). Without a doubt, a detailed emission inventory must record all sources in a given area. Beyond considering the above sources and their nature, topography and meteorology should also be considered, as stated previously. Assessment of the control policies and methods is often extrapolated from the local to the regional and then to the global scale. Air pollution may be dispersed and transported from one region to another area located far away. Air pollution management means the reduction to acceptable levels or possible elimination of air pollutants whose presence in the air affects our health or the environmental ecosystem. Private and governmental entities and authorities implement actions to ensure the air quality ( 22 ). Air quality standards and guidelines were adopted for the different pollutants by the WHO and EPA as a tool for the management of air quality ( 1 , 23 ). These standards have to be compared to the emissions inventory standards by causal analysis and dispersion modeling in order to reveal the problematic areas ( 24 ). Inventories are generally based on a combination of direct measurements and emissions modeling ( 24 ).

As an example, we state here the control measures at the source through the use of catalytic converters in cars. These are devices that turn the pollutants and toxic gases produced from combustion engines into less-toxic pollutants by catalysis through redox reactions ( 25 ). In Greece, the use of private cars was restricted by tracking their license plates in order to reduce traffic congestion during rush hour ( 25 ).

Concerning industrial emissions, collectors and closed systems can keep the air pollution to the minimal standards imposed by legislation ( 26 ).

Current strategies to improve air quality require an estimation of the economic value of the benefits gained from proposed programs. These proposed programs by public authorities, and directives are issued with guidelines to be respected.

In Europe, air quality limit values AQLVs (Air Quality Limit Values) are issued for setting off planning claims ( 27 ). In the USA, the NAAQS (National Ambient Air Quality Standards) establish the national air quality limit values ( 27 ). While both standards and directives are based on different mechanisms, significant success has been achieved in the reduction of overall emissions and associated health and environmental effects ( 27 ). The European Directive identifies geographical areas of risk exposure as monitoring/assessment zones to record the emission sources and levels of air pollution ( 27 ), whereas the USA establishes global geographical air quality criteria according to the severity of their air quality problem and records all sources of the pollutants and their precursors ( 27 ).

In this vein, funds have been financing, directly or indirectly, projects related to air quality along with the technical infrastructure to maintain good air quality. These plans focus on an inventory of databases from air quality environmental planning awareness campaigns. Moreover, pollution measures of air emissions may be taken for vehicles, machines, and industries in urban areas.

Technological innovation can only be successful if it is able to meet the needs of society. In this sense, technology must reflect the decision-making practices and procedures of those involved in risk assessment and evaluation and act as a facilitator in providing information and assessments to enable decision makers to make the best decisions possible. Summarizing the aforementioned in order to design an effective air quality control strategy, several aspects must be considered: environmental factors and ambient air quality conditions, engineering factors and air pollutant characteristics, and finally, economic operating costs for technological improvement and administrative and legal costs. Considering the economic factor, competitiveness through neoliberal concepts is offering a solution to environmental problems ( 22 ).

The development of environmental governance, along with technological progress, has initiated the deployment of a dialogue. Environmental politics has created objections and points of opposition between different political parties, scientists, media, and governmental and non-governmental organizations ( 22 ). Radical environmental activism actions and movements have been created ( 22 ). The rise of the new information and communication technologies (ICTs) are many times examined as to whether and in which way they have influenced means of communication and social movements such as activism ( 28 ). Since the 1990s, the term “digital activism” has been used increasingly and in many different disciplines ( 29 ). Nowadays, multiple digital technologies can be used to produce a digital activism outcome on environmental issues. More specifically, devices with online capabilities such as computers or mobile phones are being used as a way to pursue change in political and social affairs ( 30 ).

In the present paper, we focus on the sources of environmental pollution in relation to public health and propose some solutions and interventions that may be of interest to environmental legislators and decision makers.

Sources of Exposure

It is known that the majority of environmental pollutants are emitted through large-scale human activities such as the use of industrial machinery, power-producing stations, combustion engines, and cars. Because these activities are performed at such a large scale, they are by far the major contributors to air pollution, with cars estimated to be responsible for approximately 80% of today's pollution ( 31 ). Some other human activities are also influencing our environment to a lesser extent, such as field cultivation techniques, gas stations, fuel tanks heaters, and cleaning procedures ( 32 ), as well as several natural sources, such as volcanic and soil eruptions and forest fires.

The classification of air pollutants is based mainly on the sources producing pollution. Therefore, it is worth mentioning the four main sources, following the classification system: Major sources, Area sources, Mobile sources, and Natural sources.

Major sources include the emission of pollutants from power stations, refineries, and petrochemicals, the chemical and fertilizer industries, metallurgical and other industrial plants, and, finally, municipal incineration.

Indoor area sources include domestic cleaning activities, dry cleaners, printing shops, and petrol stations.

Mobile sources include automobiles, cars, railways, airways, and other types of vehicles.

Finally, natural sources include, as stated previously, physical disasters ( 33 ) such as forest fire, volcanic erosion, dust storms, and agricultural burning.

However, many classification systems have been proposed. Another type of classification is a grouping according to the recipient of the pollution, as follows:

Air pollution is determined as the presence of pollutants in the air in large quantities for long periods. Air pollutants are dispersed particles, hydrocarbons, CO, CO 2 , NO, NO 2 , SO 3 , etc.

Water pollution is organic and inorganic charge and biological charge ( 10 ) at high levels that affect the water quality ( 34 , 35 ).

Soil pollution occurs through the release of chemicals or the disposal of wastes, such as heavy metals, hydrocarbons, and pesticides.

Air pollution can influence the quality of soil and water bodies by polluting precipitation, falling into water and soil environments ( 34 , 36 ). Notably, the chemistry of the soil can be amended due to acid precipitation by affecting plants, cultures, and water quality ( 37 ). Moreover, movement of heavy metals is favored by soil acidity, and metals are so then moving into the watery environment. It is known that heavy metals such as aluminum are noxious to wildlife and fishes. Soil quality seems to be of importance, as soils with low calcium carbonate levels are at increased jeopardy from acid rain. Over and above rain, snow and particulate matter drip into watery ' bodies ( 36 , 38 ).

Lastly, pollution is classified following type of origin:

Radioactive and nuclear pollution , releasing radioactive and nuclear pollutants into water, air, and soil during nuclear explosions and accidents, from nuclear weapons, and through handling or disposal of radioactive sewage.

Radioactive materials can contaminate surface water bodies and, being noxious to the environment, plants, animals, and humans. It is known that several radioactive substances such as radium and uranium concentrate in the bones and can cause cancers ( 38 , 39 ).

Noise pollution is produced by machines, vehicles, traffic noises, and musical installations that are harmful to our hearing.

The World Health Organization introduced the term DALYs. The DALYs for a disease or health condition is defined as the sum of the Years of Life Lost (YLL) due to premature mortality in the population and the Years Lost due to Disability (YLD) for people living with the health condition or its consequences ( 39 ). In Europe, air pollution is the main cause of disability-adjusted life years lost (DALYs), followed by noise pollution. The potential relationships of noise and air pollution with health have been studied ( 40 ). The study found that DALYs related to noise were more important than those related to air pollution, as the effects of environmental noise on cardiovascular disease were independent of air pollution ( 40 ). Environmental noise should be counted as an independent public health risk ( 40 ).

Environmental pollution occurs when changes in the physical, chemical, or biological constituents of the environment (air masses, temperature, climate, etc.) are produced.

Pollutants harm our environment either by increasing levels above normal or by introducing harmful toxic substances. Primary pollutants are directly produced from the above sources, and secondary pollutants are emitted as by-products of the primary ones. Pollutants can be biodegradable or non-biodegradable and of natural origin or anthropogenic, as stated previously. Moreover, their origin can be a unique source (point-source) or dispersed sources.

Pollutants have differences in physical and chemical properties, explaining the discrepancy in their capacity for producing toxic effects. As an example, we state here that aerosol compounds ( 41 – 43 ) have a greater toxicity than gaseous compounds due to their tiny size (solid or liquid) in the atmosphere; they have a greater penetration capacity. Gaseous compounds are eliminated more easily by our respiratory system ( 41 ). These particles are able to damage lungs and can even enter the bloodstream ( 41 ), leading to the premature deaths of millions of people yearly. Moreover, the aerosol acidity ([H+]) seems to considerably enhance the production of secondary organic aerosols (SOA), but this last aspect is not supported by other scientific teams ( 38 ).

Climate and Pollution

Air pollution and climate change are closely related. Climate is the other side of the same coin that reduces the quality of our Earth ( 44 ). Pollutants such as black carbon, methane, tropospheric ozone, and aerosols affect the amount of incoming sunlight. As a result, the temperature of the Earth is increasing, resulting in the melting of ice, icebergs, and glaciers.

In this vein, climatic changes will affect the incidence and prevalence of both residual and imported infections in Europe. Climate and weather affect the duration, timing, and intensity of outbreaks strongly and change the map of infectious diseases in the globe ( 45 ). Mosquito-transmitted parasitic or viral diseases are extremely climate-sensitive, as warming firstly shortens the pathogen incubation period and secondly shifts the geographic map of the vector. Similarly, water-warming following climate changes leads to a high incidence of waterborne infections. Recently, in Europe, eradicated diseases seem to be emerging due to the migration of population, for example, cholera, poliomyelitis, tick-borne encephalitis, and malaria ( 46 ).

The spread of epidemics is associated with natural climate disasters and storms, which seem to occur more frequently nowadays ( 47 ). Malnutrition and disequilibration of the immune system are also associated with the emerging infections affecting public health ( 48 ).

The Chikungunya virus “took the airplane” from the Indian Ocean to Europe, as outbreaks of the disease were registered in Italy ( 49 ) as well as autochthonous cases in France ( 50 ).

An increase in cryptosporidiosis in the United Kingdom and in the Czech Republic seems to have occurred following flooding ( 36 , 51 ).

As stated previously, aerosols compounds are tiny in size and considerably affect the climate. They are able to dissipate sunlight (the albedo phenomenon) by dispersing a quarter of the sun's rays back to space and have cooled the global temperature over the last 30 years ( 52 ).

Air Pollutants

The World Health Organization (WHO) reports on six major air pollutants, namely particle pollution, ground-level ozone, carbon monoxide, sulfur oxides, nitrogen oxides, and lead. Air pollution can have a disastrous effect on all components of the environment, including groundwater, soil, and air. Additionally, it poses a serious threat to living organisms. In this vein, our interest is mainly to focus on these pollutants, as they are related to more extensive and severe problems in human health and environmental impact. Acid rain, global warming, the greenhouse effect, and climate changes have an important ecological impact on air pollution ( 53 ).

Particulate Matter (PM) and Health

Studies have shown a relationship between particulate matter (PM) and adverse health effects, focusing on either short-term (acute) or long-term (chronic) PM exposure.

Particulate matter (PM) is usually formed in the atmosphere as a result of chemical reactions between the different pollutants. The penetration of particles is closely dependent on their size ( 53 ). Particulate Matter (PM) was defined as a term for particles by the United States Environmental Protection Agency ( 54 ). Particulate matter (PM) pollution includes particles with diameters of 10 micrometers (μm) or smaller, called PM 10 , and extremely fine particles with diameters that are generally 2.5 micrometers (μm) and smaller.

Particulate matter contains tiny liquid or solid droplets that can be inhaled and cause serious health effects ( 55 ). Particles <10 μm in diameter (PM 10 ) after inhalation can invade the lungs and even reach the bloodstream. Fine particles, PM 2.5 , pose a greater risk to health ( 6 , 56 ) ( Table 1 ).

Penetrability according to particle size.

Multiple epidemiological studies have been performed on the health effects of PM. A positive relation was shown between both short-term and long-term exposures of PM 2.5 and acute nasopharyngitis ( 56 ). In addition, long-term exposure to PM for years was found to be related to cardiovascular diseases and infant mortality.

Those studies depend on PM 2.5 monitors and are restricted in terms of study area or city area due to a lack of spatially resolved daily PM 2.5 concentration data and, in this way, are not representative of the entire population. Following a recent epidemiological study by the Department of Environmental Health at Harvard School of Public Health (Boston, MA) ( 57 ), it was reported that, as PM 2.5 concentrations vary spatially, an exposure error (Berkson error) seems to be produced, and the relative magnitudes of the short- and long-term effects are not yet completely elucidated. The team developed a PM 2.5 exposure model based on remote sensing data for assessing short- and long-term human exposures ( 57 ). This model permits spatial resolution in short-term effects plus the assessment of long-term effects in the whole population.

Moreover, respiratory diseases and affection of the immune system are registered as long-term chronic effects ( 58 ). It is worth noting that people with asthma, pneumonia, diabetes, and respiratory and cardiovascular diseases are especially susceptible and vulnerable to the effects of PM. PM 2.5 , followed by PM 10 , are strongly associated with diverse respiratory system diseases ( 59 ), as their size permits them to pierce interior spaces ( 60 ). The particles produce toxic effects according to their chemical and physical properties. The components of PM 10 and PM 2.5 can be organic (polycyclic aromatic hydrocarbons, dioxins, benzene, 1-3 butadiene) or inorganic (carbon, chlorides, nitrates, sulfates, metals) in nature ( 55 ).

Particulate Matter (PM) is divided into four main categories according to type and size ( 61 ) ( Table 2 ).

Types and sizes of particulate Matter (PM).

Gas contaminants include PM in aerial masses.

Particulate contaminants include contaminants such as smog, soot, tobacco smoke, oil smoke, fly ash, and cement dust.

Biological Contaminants are microorganisms (bacteria, viruses, fungi, mold, and bacterial spores), cat allergens, house dust and allergens, and pollen.

Types of Dust include suspended atmospheric dust, settling dust, and heavy dust.

Finally, another fact is that the half-lives of PM 10 and PM 2.5 particles in the atmosphere is extended due to their tiny dimensions; this permits their long-lasting suspension in the atmosphere and even their transfer and spread to distant destinations where people and the environment may be exposed to the same magnitude of pollution ( 53 ). They are able to change the nutrient balance in watery ecosystems, damage forests and crops, and acidify water bodies.

As stated, PM 2.5 , due to their tiny size, are causing more serious health effects. These aforementioned fine particles are the main cause of the “haze” formation in different metropolitan areas ( 12 , 13 , 61 ).

Ozone Impact in the Atmosphere

Ozone (O 3 ) is a gas formed from oxygen under high voltage electric discharge ( 62 ). It is a strong oxidant, 52% stronger than chlorine. It arises in the stratosphere, but it could also arise following chain reactions of photochemical smog in the troposphere ( 63 ).

Ozone can travel to distant areas from its initial source, moving with air masses ( 64 ). It is surprising that ozone levels over cities are low in contrast to the increased amounts occuring in urban areas, which could become harmful for cultures, forests, and vegetation ( 65 ) as it is reducing carbon assimilation ( 66 ). Ozone reduces growth and yield ( 47 , 48 ) and affects the plant microflora due to its antimicrobial capacity ( 67 , 68 ). In this regard, ozone acts upon other natural ecosystems, with microflora ( 69 , 70 ) and animal species changing their species composition ( 71 ). Ozone increases DNA damage in epidermal keratinocytes and leads to impaired cellular function ( 72 ).

Ground-level ozone (GLO) is generated through a chemical reaction between oxides of nitrogen and VOCs emitted from natural sources and/or following anthropogenic activities.

Ozone uptake usually occurs by inhalation. Ozone affects the upper layers of the skin and the tear ducts ( 73 ). A study of short-term exposure of mice to high levels of ozone showed malondialdehyde formation in the upper skin (epidermis) but also depletion in vitamins C and E. It is likely that ozone levels are not interfering with the skin barrier function and integrity to predispose to skin disease ( 74 ).

Due to the low water-solubility of ozone, inhaled ozone has the capacity to penetrate deeply into the lungs ( 75 ).

Toxic effects induced by ozone are registered in urban areas all over the world, causing biochemical, morphologic, functional, and immunological disorders ( 76 ).

The European project (APHEA2) focuses on the acute effects of ambient ozone concentrations on mortality ( 77 ). Daily ozone concentrations compared to the daily number of deaths were reported from different European cities for a 3-year period. During the warm period of the year, an observed increase in ozone concentration was associated with an increase in the daily number of deaths (0.33%), in the number of respiratory deaths (1.13%), and in the number of cardiovascular deaths (0.45%). No effect was observed during wintertime.

Carbon Monoxide (CO)

Carbon monoxide is produced by fossil fuel when combustion is incomplete. The symptoms of poisoning due to inhaling carbon monoxide include headache, dizziness, weakness, nausea, vomiting, and, finally, loss of consciousness.

The affinity of carbon monoxide to hemoglobin is much greater than that of oxygen. In this vein, serious poisoning may occur in people exposed to high levels of carbon monoxide for a long period of time. Due to the loss of oxygen as a result of the competitive binding of carbon monoxide, hypoxia, ischemia, and cardiovascular disease are observed.

Carbon monoxide affects the greenhouses gases that are tightly connected to global warming and climate. This should lead to an increase in soil and water temperatures, and extreme weather conditions or storms may occur ( 68 ).

However, in laboratory and field experiments, it has been seen to produce increased plant growth ( 78 ).

Nitrogen Oxide (NO 2 )

Nitrogen oxide is a traffic-related pollutant, as it is emitted from automobile motor engines ( 79 , 80 ). It is an irritant of the respiratory system as it penetrates deep in the lung, inducing respiratory diseases, coughing, wheezing, dyspnea, bronchospasm, and even pulmonary edema when inhaled at high levels. It seems that concentrations over 0.2 ppm produce these adverse effects in humans, while concentrations higher than 2.0 ppm affect T-lymphocytes, particularly the CD8+ cells and NK cells that produce our immune response ( 81 ).It is reported that long-term exposure to high levels of nitrogen dioxide can be responsible for chronic lung disease. Long-term exposure to NO 2 can impair the sense of smell ( 81 ).

However, systems other than respiratory ones can be involved, as symptoms such as eye, throat, and nose irritation have been registered ( 81 ).

High levels of nitrogen dioxide are deleterious to crops and vegetation, as they have been observed to reduce crop yield and plant growth efficiency. Moreover, NO 2 can reduce visibility and discolor fabrics ( 81 ).

Sulfur Dioxide (SO 2 )

Sulfur dioxide is a harmful gas that is emitted mainly from fossil fuel consumption or industrial activities. The annual standard for SO 2 is 0.03 ppm ( 82 ). It affects human, animal, and plant life. Susceptible people as those with lung disease, old people, and children, who present a higher risk of damage. The major health problems associated with sulfur dioxide emissions in industrialized areas are respiratory irritation, bronchitis, mucus production, and bronchospasm, as it is a sensory irritant and penetrates deep into the lung converted into bisulfite and interacting with sensory receptors, causing bronchoconstriction. Moreover, skin redness, damage to the eyes (lacrimation and corneal opacity) and mucous membranes, and worsening of pre-existing cardiovascular disease have been observed ( 81 ).

Environmental adverse effects, such as acidification of soil and acid rain, seem to be associated with sulfur dioxide emissions ( 83 ).

Lead is a heavy metal used in different industrial plants and emitted from some petrol motor engines, batteries, radiators, waste incinerators, and waste waters ( 84 ).

Moreover, major sources of lead pollution in the air are metals, ore, and piston-engine aircraft. Lead poisoning is a threat to public health due to its deleterious effects upon humans, animals, and the environment, especially in the developing countries.

Exposure to lead can occur through inhalation, ingestion, and dermal absorption. Trans- placental transport of lead was also reported, as lead passes through the placenta unencumbered ( 85 ). The younger the fetus is, the more harmful the toxic effects. Lead toxicity affects the fetal nervous system; edema or swelling of the brain is observed ( 86 ). Lead, when inhaled, accumulates in the blood, soft tissue, liver, lung, bones, and cardiovascular, nervous, and reproductive systems. Moreover, loss of concentration and memory, as well as muscle and joint pain, were observed in adults ( 85 , 86 ).

Children and newborns ( 87 ) are extremely susceptible even to minimal doses of lead, as it is a neurotoxicant and causes learning disabilities, impairment of memory, hyperactivity, and even mental retardation.

Elevated amounts of lead in the environment are harmful to plants and crop growth. Neurological effects are observed in vertebrates and animals in association with high lead levels ( 88 ).

Polycyclic Aromatic Hydrocarbons(PAHs)

The distribution of PAHs is ubiquitous in the environment, as the atmosphere is the most important means of their dispersal. They are found in coal and in tar sediments. Moreover, they are generated through incomplete combustion of organic matter as in the cases of forest fires, incineration, and engines ( 89 ). PAH compounds, such as benzopyrene, acenaphthylene, anthracene, and fluoranthene are recognized as toxic, mutagenic, and carcinogenic substances. They are an important risk factor for lung cancer ( 89 ).

Volatile Organic Compounds(VOCs)

Volatile organic compounds (VOCs), such as toluene, benzene, ethylbenzene, and xylene ( 90 ), have been found to be associated with cancer in humans ( 91 ). The use of new products and materials has actually resulted in increased concentrations of VOCs. VOCs pollute indoor air ( 90 ) and may have adverse effects on human health ( 91 ). Short-term and long-term adverse effects on human health are observed. VOCs are responsible for indoor air smells. Short-term exposure is found to cause irritation of eyes, nose, throat, and mucosal membranes, while those of long duration exposure include toxic reactions ( 92 ). Predictable assessment of the toxic effects of complex VOC mixtures is difficult to estimate, as these pollutants can have synergic, antagonistic, or indifferent effects ( 91 , 93 ).

Dioxins originate from industrial processes but also come from natural processes, such as forest fires and volcanic eruptions. They accumulate in foods such as meat and dairy products, fish and shellfish, and especially in the fatty tissue of animals ( 94 ).

Short-period exhibition to high dioxin concentrations may result in dark spots and lesions on the skin ( 94 ). Long-term exposure to dioxins can cause developmental problems, impairment of the immune, endocrine and nervous systems, reproductive infertility, and cancer ( 94 ).

Without any doubt, fossil fuel consumption is responsible for a sizeable part of air contamination. This contamination may be anthropogenic, as in agricultural and industrial processes or transportation, while contamination from natural sources is also possible. Interestingly, it is of note that the air quality standards established through the European Air Quality Directive are somewhat looser than the WHO guidelines, which are stricter ( 95 ).

Effect of Air Pollution on Health

The most common air pollutants are ground-level ozone and Particulates Matter (PM). Air pollution is distinguished into two main types:

Outdoor pollution is the ambient air pollution.

Indoor pollution is the pollution generated by household combustion of fuels.

People exposed to high concentrations of air pollutants experience disease symptoms and states of greater and lesser seriousness. These effects are grouped into short- and long-term effects affecting health.

Susceptible populations that need to be aware of health protection measures include old people, children, and people with diabetes and predisposing heart or lung disease, especially asthma.

As extensively stated previously, according to a recent epidemiological study from Harvard School of Public Health, the relative magnitudes of the short- and long-term effects have not been completely clarified ( 57 ) due to the different epidemiological methodologies and to the exposure errors. New models are proposed for assessing short- and long-term human exposure data more successfully ( 57 ). Thus, in the present section, we report the more common short- and long-term health effects but also general concerns for both types of effects, as these effects are often dependent on environmental conditions, dose, and individual susceptibility.

Short-term effects are temporary and range from simple discomfort, such as irritation of the eyes, nose, skin, throat, wheezing, coughing and chest tightness, and breathing difficulties, to more serious states, such as asthma, pneumonia, bronchitis, and lung and heart problems. Short-term exposure to air pollution can also cause headaches, nausea, and dizziness.

These problems can be aggravated by extended long-term exposure to the pollutants, which is harmful to the neurological, reproductive, and respiratory systems and causes cancer and even, rarely, deaths.

The long-term effects are chronic, lasting for years or the whole life and can even lead to death. Furthermore, the toxicity of several air pollutants may also induce a variety of cancers in the long term ( 96 ).

As stated already, respiratory disorders are closely associated with the inhalation of air pollutants. These pollutants will invade through the airways and will accumulate at the cells. Damage to target cells should be related to the pollutant component involved and its source and dose. Health effects are also closely dependent on country, area, season, and time. An extended exposure duration to the pollutant should incline to long-term health effects in relation also to the above factors.

Particulate Matter (PMs), dust, benzene, and O 3 cause serious damage to the respiratory system ( 97 ). Moreover, there is a supplementary risk in case of existing respiratory disease such as asthma ( 98 ). Long-term effects are more frequent in people with a predisposing disease state. When the trachea is contaminated by pollutants, voice alterations may be remarked after acute exposure. Chronic obstructive pulmonary disease (COPD) may be induced following air pollution, increasing morbidity and mortality ( 99 ). Long-term effects from traffic, industrial air pollution, and combustion of fuels are the major factors for COPD risk ( 99 ).

Multiple cardiovascular effects have been observed after exposure to air pollutants ( 100 ). Changes occurred in blood cells after long-term exposure may affect cardiac functionality. Coronary arteriosclerosis was reported following long-term exposure to traffic emissions ( 101 ), while short-term exposure is related to hypertension, stroke, myocardial infracts, and heart insufficiency. Ventricle hypertrophy is reported to occur in humans after long-time exposure to nitrogen oxide (NO 2 ) ( 102 , 103 ).

Neurological effects have been observed in adults and children after extended-term exposure to air pollutants.

Psychological complications, autism, retinopathy, fetal growth, and low birth weight seem to be related to long-term air pollution ( 83 ). The etiologic agent of the neurodegenerative diseases (Alzheimer's and Parkinson's) is not yet known, although it is believed that extended exposure to air pollution seems to be a factor. Specifically, pesticides and metals are cited as etiological factors, together with diet. The mechanisms in the development of neurodegenerative disease include oxidative stress, protein aggregation, inflammation, and mitochondrial impairment in neurons ( 104 ) ( Figure 1 ).

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Impact of air pollutants on the brain.

Brain inflammation was observed in dogs living in a highly polluted area in Mexico for a long period ( 105 ). In human adults, markers of systemic inflammation (IL-6 and fibrinogen) were found to be increased as an immediate response to PNC on the IL-6 level, possibly leading to the production of acute-phase proteins ( 106 ). The progression of atherosclerosis and oxidative stress seem to be the mechanisms involved in the neurological disturbances caused by long-term air pollution. Inflammation comes secondary to the oxidative stress and seems to be involved in the impairment of developmental maturation, affecting multiple organs ( 105 , 107 ). Similarly, other factors seem to be involved in the developmental maturation, which define the vulnerability to long-term air pollution. These include birthweight, maternal smoking, genetic background and socioeconomic environment, as well as education level.

However, diet, starting from breast-feeding, is another determinant factor. Diet is the main source of antioxidants, which play a key role in our protection against air pollutants ( 108 ). Antioxidants are free radical scavengers and limit the interaction of free radicals in the brain ( 108 ). Similarly, genetic background may result in a differential susceptibility toward the oxidative stress pathway ( 60 ). For example, antioxidant supplementation with vitamins C and E appears to modulate the effect of ozone in asthmatic children homozygous for the GSTM1 null allele ( 61 ). Inflammatory cytokines released in the periphery (e.g., respiratory epithelia) upregulate the innate immune Toll-like receptor 2. Such activation and the subsequent events leading to neurodegeneration have recently been observed in lung lavage in mice exposed to ambient Los Angeles (CA, USA) particulate matter ( 61 ). In children, neurodevelopmental morbidities were observed after lead exposure. These children developed aggressive and delinquent behavior, reduced intelligence, learning difficulties, and hyperactivity ( 109 ). No level of lead exposure seems to be “safe,” and the scientific community has asked the Centers for Disease Control and Prevention (CDC) to reduce the current screening guideline of 10 μg/dl ( 109 ).

It is important to state that impact on the immune system, causing dysfunction and neuroinflammation ( 104 ), is related to poor air quality. Yet, increases in serum levels of immunoglobulins (IgA, IgM) and the complement component C3 are observed ( 106 ). Another issue is that antigen presentation is affected by air pollutants, as there is an upregulation of costimulatory molecules such as CD80 and CD86 on macrophages ( 110 ).

As is known, skin is our shield against ultraviolet radiation (UVR) and other pollutants, as it is the most exterior layer of our body. Traffic-related pollutants, such as PAHs, VOCs, oxides, and PM, may cause pigmented spots on our skin ( 111 ). On the one hand, as already stated, when pollutants penetrate through the skin or are inhaled, damage to the organs is observed, as some of these pollutants are mutagenic and carcinogenic, and, specifically, they affect the liver and lung. On the other hand, air pollutants (and those in the troposphere) reduce the adverse effects of ultraviolet radiation UVR in polluted urban areas ( 111 ). Air pollutants absorbed by the human skin may contribute to skin aging, psoriasis, acne, urticaria, eczema, and atopic dermatitis ( 111 ), usually caused by exposure to oxides and photochemical smoke ( 111 ). Exposure to PM and cigarette smoking act as skin-aging agents, causing spots, dyschromia, and wrinkles. Lastly, pollutants have been associated with skin cancer ( 111 ).

Higher morbidity is reported to fetuses and children when exposed to the above dangers. Impairment in fetal growth, low birth weight, and autism have been reported ( 112 ).

Another exterior organ that may be affected is the eye. Contamination usually comes from suspended pollutants and may result in asymptomatic eye outcomes, irritation ( 112 ), retinopathy, or dry eye syndrome ( 113 , 114 ).

Environmental Impact of Air Pollution

Air pollution is harming not only human health but also the environment ( 115 ) in which we live. The most important environmental effects are as follows.

Acid rain is wet (rain, fog, snow) or dry (particulates and gas) precipitation containing toxic amounts of nitric and sulfuric acids. They are able to acidify the water and soil environments, damage trees and plantations, and even damage buildings and outdoor sculptures, constructions, and statues.

Haze is produced when fine particles are dispersed in the air and reduce the transparency of the atmosphere. It is caused by gas emissions in the air coming from industrial facilities, power plants, automobiles, and trucks.

Ozone , as discussed previously, occurs both at ground level and in the upper level (stratosphere) of the Earth's atmosphere. Stratospheric ozone is protecting us from the Sun's harmful ultraviolet (UV) rays. In contrast, ground-level ozone is harmful to human health and is a pollutant. Unfortunately, stratospheric ozone is gradually damaged by ozone-depleting substances (i.e., chemicals, pesticides, and aerosols). If this protecting stratospheric ozone layer is thinned, then UV radiation can reach our Earth, with harmful effects for human life (skin cancer) ( 116 ) and crops ( 117 ). In plants, ozone penetrates through the stomata, inducing them to close, which blocks CO 2 transfer and induces a reduction in photosynthesis ( 118 ).

Global climate change is an important issue that concerns mankind. As is known, the “greenhouse effect” keeps the Earth's temperature stable. Unhappily, anthropogenic activities have destroyed this protecting temperature effect by producing large amounts of greenhouse gases, and global warming is mounting, with harmful effects on human health, animals, forests, wildlife, agriculture, and the water environment. A report states that global warming is adding to the health risks of poor people ( 119 ).

People living in poorly constructed buildings in warm-climate countries are at high risk for heat-related health problems as temperatures mount ( 119 ).

Wildlife is burdened by toxic pollutants coming from the air, soil, or the water ecosystem and, in this way, animals can develop health problems when exposed to high levels of pollutants. Reproductive failure and birth effects have been reported.

Eutrophication is occurring when elevated concentrations of nutrients (especially nitrogen) stimulate the blooming of aquatic algae, which can cause a disequilibration in the diversity of fish and their deaths.

Without a doubt, there is a critical concentration of pollution that an ecosystem can tolerate without being destroyed, which is associated with the ecosystem's capacity to neutralize acidity. The Canada Acid Rain Program established this load at 20 kg/ha/yr ( 120 ).

Hence, air pollution has deleterious effects on both soil and water ( 121 ). Concerning PM as an air pollutant, its impact on crop yield and food productivity has been reported. Its impact on watery bodies is associated with the survival of living organisms and fishes and their productivity potential ( 121 ).

An impairment in photosynthetic rhythm and metabolism is observed in plants exposed to the effects of ozone ( 121 ).

Sulfur and nitrogen oxides are involved in the formation of acid rain and are harmful to plants and marine organisms.

Last but not least, as mentioned above, the toxicity associated with lead and other metals is the main threat to our ecosystems (air, water, and soil) and living creatures ( 121 ).

In 2018, during the first WHO Global Conference on Air Pollution and Health, the WHO's General Director, Dr. Tedros Adhanom Ghebreyesus, called air pollution a “silent public health emergency” and “the new tobacco” ( 122 ).

Undoubtedly, children are particularly vulnerable to air pollution, especially during their development. Air pollution has adverse effects on our lives in many different respects.

Diseases associated with air pollution have not only an important economic impact but also a societal impact due to absences from productive work and school.

Despite the difficulty of eradicating the problem of anthropogenic environmental pollution, a successful solution could be envisaged as a tight collaboration of authorities, bodies, and doctors to regularize the situation. Governments should spread sufficient information and educate people and should involve professionals in these issues so as to control the emergence of the problem successfully.

Technologies to reduce air pollution at the source must be established and should be used in all industries and power plants. The Kyoto Protocol of 1997 set as a major target the reduction of GHG emissions to below 5% by 2012 ( 123 ). This was followed by the Copenhagen summit, 2009 ( 124 ), and then the Durban summit of 2011 ( 125 ), where it was decided to keep to the same line of action. The Kyoto protocol and the subsequent ones were ratified by many countries. Among the pioneers who adopted this important protocol for the world's environmental and climate “health” was China ( 3 ). As is known, China is a fast-developing economy and its GDP (Gross Domestic Product) is expected to be very high by 2050, which is defined as the year of dissolution of the protocol for the decrease in gas emissions.

A more recent international agreement of crucial importance for climate change is the Paris Agreement of 2015, issued by the UNFCCC (United Nations Climate Change Committee). This latest agreement was ratified by a plethora of UN (United Nations) countries as well as the countries of the European Union ( 126 ). In this vein, parties should promote actions and measures to enhance numerous aspects around the subject. Boosting education, training, public awareness, and public participation are some of the relevant actions for maximizing the opportunities to achieve the targets and goals on the crucial matter of climate change and environmental pollution ( 126 ). Without any doubt, technological improvements makes our world easier and it seems difficult to reduce the harmful impact caused by gas emissions, we could limit its use by seeking reliable approaches.

Synopsizing, a global prevention policy should be designed in order to combat anthropogenic air pollution as a complement to the correct handling of the adverse health effects associated with air pollution. Sustainable development practices should be applied, together with information coming from research in order to handle the problem effectively.

At this point, international cooperation in terms of research, development, administration policy, monitoring, and politics is vital for effective pollution control. Legislation concerning air pollution must be aligned and updated, and policy makers should propose the design of a powerful tool of environmental and health protection. As a result, the main proposal of this essay is that we should focus on fostering local structures to promote experience and practice and extrapolate these to the international level through developing effective policies for sustainable management of ecosystems.

Author Contributions

All authors listed have made a substantial, direct and intellectual contribution to the work, and approved it for publication.

Conflict of Interest

IM is employed by the company Delphis S.A. The remaining authors declare that the present review paper was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Environmental Pollution: Causes and Consequences Essay

Environmental pollution is the unwarranted discharge of mass or energy into the planet’s natural resource pools, such as land, air, or water, which detriments the environment’s ecological stability and the health of the living things that inhabit it. There is an intensified health risk and pollution in middle and low-income countries due to the increased use of pesticides, industrialization, the introduction of nitrogen-based fertilizers, forest fires, urbanization, and inadequate waste management (Appannagari, 2017). Air pollution, lead and chemicals exposure, hazardous waste exposure, and inappropriate e-waste disposal all result in unfavorable living conditions, fatal illnesses, and ecosystem destruction. The essay will provide an overview of pollution and proffer solutions to combating pollution for a sustainable environment and health.

In addition to hindering economic development and considerably accelerating climate change, pollution exacerbates poverty and inequality in urban and rural areas. The most pain is always experienced by the poor, who cannot afford to protect themselves against pollution’s harmful effects. The main environmental factor contributing to sickness and early mortality is pollution due to premature deaths resulting from pollution (Appannagari, 2017). Due to the unacceptably high cost to human capital and health, as well as the resulting GDP losses, pollution must be addressed. Through initiatives like reducing black carbon and methane emissions, which are responsible for air pollution and climate change, pollution management can also significantly contribute to climate change mitigation (Appannagari, 2017). Additionally, pollution control can promote competitiveness through, for instance, job growth, increased energy efficiency, better transportation, and sustainable urban and rural development. Below are the various approaches for solutions to health and pollution problems.

First, governments should evaluate pollution as a national and international priority and integrate it into the city and country planning process. Pollution affects the health and well-being of societies and, as such, cannot be solely viewed as an environmental issue (The Lancet Commission on Pollution and Health, 2017). All levels of government should give pollution prevention a high priority, incorporate it into development planning, and tie it to commitments regarding climate change, SDGs, and the prevention of non-communicable diseases. Some options are both affordable and offer good returns on investment.

Secondly, governments should increase funding for pollution control and prioritize it by health impacts. There should be a significant increase in the financing for pollution management in low- and middle-income nations, both from national budgets and international development organizations (The Lancet Commission on Pollution and Health, 2017). The most effective international support for pollution reduction is when it mobilizes additional actions and funding from others. Examples include helping towns and nations that are quickly industrializing concerning technical capacity building, regulatory and enforcement support, and support for direct actions to save lives. Monitoring financing initiatives are necessary to determine their cost-effectiveness and to raise accountability.

Thirdly, organizations should work to build multicultural partnerships for pollution control. Public-private partnerships and interagency cooperation can be powerful tools in creating clean technology and energy sources that will ultimately prevent pollution at its source (The Lancet Commission on Pollution and Health, 2017). Collaborations between ministries that include the ministries of finance, energy, development, agriculture, and transport, as well as the ministries of health and the environment, are crucial in pollution control. Governments should promote monitoring systems that could identify and apportion pollution sources, measure pollution levels, guide enforcement, and assess progress toward goals. The use of new technology in pollution monitoring, such as data mining and satellite images, can boost effectiveness, broaden the monitoring area, and cut costs.

One of the main issues facing the world in the current period is pollution. Natural resources are depleting daily due to car emissions, new technologies, factories, and chemicals added to food. All of these factors seriously harm the world. However, the problems caused by pollution can be prevented by building multicultural partnerships, increasing funding for pollution control, integrating it into the country’s planning process, and adopting new technology for monitoring pollution. Preventing pollution lowers the cost to the environment and the economy.

Appannagari, R. R. (2017). Environmental pollution causes and consequences: A study . North Asian International Research Journal of Social Science and Humanities , 3 (8), 151-161. Web.

Excell High School. (2018). Environmental Science . Excel Education Systems, Inc. Web.

The Lancet Commission on Pollution and Health. (2017). Pollution and health: Six problems and six solutions. Knowledge, Evidence, and Learning for Development.

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1. IvyPanda . "Environmental Pollution: Causes and Consequences." December 18, 2023. https://ivypanda.com/essays/environmental-pollution-causes-and-consequences/.

Bibliography

IvyPanda . "Environmental Pollution: Causes and Consequences." December 18, 2023. https://ivypanda.com/essays/environmental-pollution-causes-and-consequences/.

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Essay on Environmental Pollution: 100 Words, 200 Words

Updated on
Aug 31, 2023

One of the biggest risks to life as we know it is environmental degradation. The water we drink, the air we breathe, and the ecosystems on which we depend are all impacted by pollution. People, animals, and plants will decline if pollution levels continue to rise since they won’t be able to adapt to a significantly altered environment. Are you struggling to write an essay on environmental pollution? If the answer is yes, then this blog will help you get some ideas to write an effective essay. Keep reading further to know more!

This Blog Includes:

Essay on environmental pollution – 100 words , essay on environmental pollution – 250 words , essay on environmental pollution – 500 words .

The presence of contaminants in the environment is referred to as pollution. Gases like Carbon Dioxide (CO2) and Carbon Monoxide (CO), among others; solid pollutants like plastic, sewage, etc.; and chemicals like fertilisers, as well as those produced as byproducts in manufacturing, transportation, etc., are a few examples of polluting substances.

The immediate result of pollution is that it makes the world’s natural resources useless or toxic to use, as well as leads to the extinction of species and ecological imbalance. To stop more harm from occurring to the earth and its inhabitants due to environmental pollution, it is imperative to take proactive precautions.

Prachi Gupta

Prachi has 1.5 yrs of experience in Content & Copywriting. Her skills entail SEO, researching, brainstorming marketing campaigns, suggesting content ideas, graphic designing, Keyword research, understanding user intent etc. She thrives on a work culture that helps her unlearn redundant ways of thinking. Besides this, she always has her binoculars on looking for good books and music recommendations, cocktails and world history.

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ENCYCLOPEDIC ENTRY

Air pollution.

Air pollution consists of chemicals or particles in the air that can harm the health of humans, animals, and plants. It also damages buildings.

Biology, Ecology, Earth Science, Geography

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Air pollution consists of chemicals or particles in the air that can harm the health of humans, animals, and plants. It also damages buildings. Pollutants in the air take many forms. They can be gases , solid particles, or liquid droplets. Sources of Air Pollution Pollution enters the Earth's atmosphere in many different ways. Most air pollution is created by people, taking the form of emissions from factories, cars, planes, or aerosol cans . Second-hand cigarette smoke is also considered air pollution. These man-made sources of pollution are called anthropogenic sources . Some types of air pollution, such as smoke from wildfires or ash from volcanoes , occur naturally. These are called natural sources . Air pollution is most common in large cities where emissions from many different sources are concentrated . Sometimes, mountains or tall buildings prevent air pollution from spreading out. This air pollution often appears as a cloud making the air murky. It is called smog . The word "smog" comes from combining the words "smoke" and " fog ." Large cities in poor and developing nations tend to have more air pollution than cities in developed nations. According to the World Health Organization (WHO) , some of the worlds most polluted cities are Karachi, Pakistan; New Delhi, India; Beijing, China; Lima, Peru; and Cairo, Egypt. However, many developed nations also have air pollution problems. Los Angeles, California, is nicknamed Smog City. Indoor Air Pollution Air pollution is usually thought of as smoke from large factories or exhaust from vehicles. But there are many types of indoor air pollution as well. Heating a house by burning substances such as kerosene , wood, and coal can contaminate the air inside the house. Ash and smoke make breathing difficult, and they can stick to walls, food, and clothing. Naturally-occurring radon gas, a cancer -causing material, can also build up in homes. Radon is released through the surface of the Earth. Inexpensive systems installed by professionals can reduce radon levels. Some construction materials, including insulation , are also dangerous to people's health. In addition, ventilation , or air movement, in homes and rooms can lead to the spread of toxic mold . A single colony of mold may exist in a damp, cool place in a house, such as between walls. The mold's spores enter the air and spread throughout the house. People can become sick from breathing in the spores. Effects On Humans People experience a wide range of health effects from being exposed to air pollution. Effects can be broken down into short-term effects and long-term effects . Short-term effects, which are temporary , include illnesses such as pneumonia or bronchitis . They also include discomfort such as irritation to the nose, throat, eyes, or skin. Air pollution can also cause headaches, dizziness, and nausea . Bad smells made by factories, garbage , or sewer systems are considered air pollution, too. These odors are less serious but still unpleasant . Long-term effects of air pollution can last for years or for an entire lifetime. They can even lead to a person's death. Long-term health effects from air pollution include heart disease , lung cancer, and respiratory diseases such as emphysema . Air pollution can also cause long-term damage to people's nerves , brain, kidneys , liver , and other organs. Some scientists suspect air pollutants cause birth defects . Nearly 2.5 million people die worldwide each year from the effects of outdoor or indoor air pollution. People react differently to different types of air pollution. Young children and older adults, whose immune systems tend to be weaker, are often more sensitive to pollution. Conditions such as asthma , heart disease, and lung disease can be made worse by exposure to air pollution. The length of exposure and amount and type of pollutants are also factors. Effects On The Environment Like people, animals, and plants, entire ecosystems can suffer effects from air pollution. Haze , like smog, is a visible type of air pollution that obscures shapes and colors. Hazy air pollution can even muffle sounds. Air pollution particles eventually fall back to Earth. Air pollution can directly contaminate the surface of bodies of water and soil . This can kill crops or reduce their yield . It can kill young trees and other plants. Sulfur dioxide and nitrogen oxide particles in the air, can create acid rain when they mix with water and oxygen in the atmosphere. These air pollutants come mostly from coal-fired power plants and motor vehicles . When acid rain falls to Earth, it damages plants by changing soil composition ; degrades water quality in rivers, lakes and streams; damages crops; and can cause buildings and monuments to decay . Like humans, animals can suffer health effects from exposure to air pollution. Birth defects, diseases, and lower reproductive rates have all been attributed to air pollution. Global Warming Global warming is an environmental phenomenon caused by natural and anthropogenic air pollution. It refers to rising air and ocean temperatures around the world. This temperature rise is at least partially caused by an increase in the amount of greenhouse gases in the atmosphere. Greenhouse gases trap heat energy in the Earths atmosphere. (Usually, more of Earths heat escapes into space.) Carbon dioxide is a greenhouse gas that has had the biggest effect on global warming. Carbon dioxide is emitted into the atmosphere by burning fossil fuels (coal, gasoline , and natural gas ). Humans have come to rely on fossil fuels to power cars and planes, heat homes, and run factories. Doing these things pollutes the air with carbon dioxide. Other greenhouse gases emitted by natural and artificial sources also include methane , nitrous oxide , and fluorinated gases. Methane is a major emission from coal plants and agricultural processes. Nitrous oxide is a common emission from industrial factories, agriculture, and the burning of fossil fuels in cars. Fluorinated gases, such as hydrofluorocarbons , are emitted by industry. Fluorinated gases are often used instead of gases such as chlorofluorocarbons (CFCs). CFCs have been outlawed in many places because they deplete the ozone layer . Worldwide, many countries have taken steps to reduce or limit greenhouse gas emissions to combat global warming. The Kyoto Protocol , first adopted in Kyoto, Japan, in 1997, is an agreement between 183 countries that they will work to reduce their carbon dioxide emissions. The United States has not signed that treaty . Regulation In addition to the international Kyoto Protocol, most developed nations have adopted laws to regulate emissions and reduce air pollution. In the United States, debate is under way about a system called cap and trade to limit emissions. This system would cap, or place a limit, on the amount of pollution a company is allowed. Companies that exceeded their cap would have to pay. Companies that polluted less than their cap could trade or sell their remaining pollution allowance to other companies. Cap and trade would essentially pay companies to limit pollution. In 2006 the World Health Organization issued new Air Quality Guidelines. The WHOs guidelines are tougher than most individual countries existing guidelines. The WHO guidelines aim to reduce air pollution-related deaths by 15 percent a year. Reduction Anybody can take steps to reduce air pollution. Millions of people every day make simple changes in their lives to do this. Taking public transportation instead of driving a car, or riding a bike instead of traveling in carbon dioxide-emitting vehicles are a couple of ways to reduce air pollution. Avoiding aerosol cans, recycling yard trimmings instead of burning them, and not smoking cigarettes are others.

Downwinders The United States conducted tests of nuclear weapons at the Nevada Test Site in southern Nevada in the 1950s. These tests sent invisible radioactive particles into the atmosphere. These air pollution particles traveled with wind currents, eventually falling to Earth, sometimes hundreds of miles away in states including Idaho, Utah, Arizona, and Washington. These areas were considered to be "downwind" from the Nevada Test Site. Decades later, people living in those downwind areascalled "downwinders"began developing cancer at above-normal rates. In 1990, the U.S. government passed the Radiation Exposure Compensation Act. This law entitles some downwinders to payments of $50,000.

Greenhouse Gases There are five major greenhouse gases in Earth's atmosphere.

water vapor
carbon dioxide
nitrous oxide

London Smog What has come to be known as the London Smog of 1952, or the Great Smog of 1952, was a four-day incident that sickened 100,000 people and caused as many as 12,000 deaths. Very cold weather in December 1952 led residents of London, England, to burn more coal to keep warm. Smoke and other pollutants became trapped by a thick fog that settled over the city. The polluted fog became so thick that people could only see a few meters in front of them.

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Related Resources

Biology Article
Types Of Pollution

Types of Pollution

What is pollution.

Air Pollution

Water Pollution

Soil Pollution

Noise Pollution

There are various types of pollution chiefly arising as a result of anthropogenic causes. Also contributing to pollution is globalisation, where humanity’s constant need for natural resources has slowly started to change the face of the earth.

Though the quality of living has drastically improved, other new issues have risen that gradually impact human health and the environment. In this article, we shall explore the meaning, causes and types of pollution. Also, we shall analyse the repercussions of pollution on human health and the environment.

“Pollution is the introduction of substances (or energy) that cause adverse changes in the environment and living entities .”

Pollution need not always be caused by chemical substances such as particulates (like smoke and dust). Forms of energy such as sound, heat or light can also cause pollution. These substances that cause pollution are called pollutants.

Pollution, even in minuscule amounts, impacts the ecological balance. Pollutants can make their way up the food chain and eventually find their way inside the human body. Read on to explore the types of pollution and their implications.

Frequently Asked Questions

What are the different types of pollution.

The different types of pollution include:

Air pollution
Water pollution
Soil pollution
Radioactive pollution
Noise pollution

Name the harmful pollutants responsible for polluting the environment.

The harmful pollutants responsible for polluting the environment are:

Nitrogen oxide
Sulphur oxide
Particulate matter
Chlorofluorocarbon
Volatile organic compounds

What are the different types of pollutants?

The different types of pollutants are:

Primary Pollutants: These are the pollutants that are emitted directly from the sources such as volcanic eruptions, combustion of fossil fuel, etc. These include nitrogen oxide, sulphur oxide, etc.
Secondary Pollutants: These are the pollutants that are not directly emitted from the sources but are formed when primary pollutants react in the atmosphere. For eg., ozone.

What is radioactive pollution?

Radioactive pollution is the pollution caused by the release of radioactive substances in the atmosphere during activities such as nuclear explosions, mining of radioactive ores, etc.

What are the consequences of mercury pollution?

Mercury pollution is the pollution caused by the release of mercury from mercury products or emissions from coal-burning power plants in the air, water or land. Mercury pollution results in neurological and behavioural disorders in humans. Insomnia, memory loss, headaches, and tremors are some of the symptoms of mercury pollution.

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Causes of Pollution Essay

Pollution is the result of dangerous compounds, or pollutants, interacting with the elements of the natural environment. There are many different types of pollution—soil, air, water, and land pollution. Whatever type of pollution it is, it has a negative impact on our environment, people, animals and ecosystem as a whole. Here are some essays on ‘Causes of Pollution’ that students can refer to for their school assignments and projects.

100 Words Essay Causes of Pollution

200 words essay causes of pollution, 500 words essay causes of pollution.

Pollution is the release of undesired elements into the environment, which can harm our planet. Water pollution, air pollution, soil contamination, and noise pollution are the four basic forms of pollution. Our reckless actions have resulted in pollution of many types. We directly dump waste into bodies of water, which causes water contamination. Vehicles and Industrial waste that emit smoke into the air generate air pollution, which makes it difficult for all living things to breathe. Directly depositing the waste into landfills leads to soil pollution. Although it cannot be seen, noise pollution is a severe type of pollution that can harm our ears.

Environmental pollution is caused by a variety of human activities. Global population growth and widespread development have led to a rise in human activity, including deforestation, industrialization, and urbanisation, among other things. Each of these activities has a different impact on the environment. For example, industrialization pollutes air and water bodies because manufacturing sectors produce a large amount of harmful pollutants in both gaseous and liquid forms. Lack of effective management causes these contaminants to be released into the environment, causing pollution of the air and water sources. Similarly, vehicles used for transportation run on fossil fuels, which when burned release dangerous chemicals like Carbon Monoxide, Carbon Dioxide etc.

These gases then interact with the atmosphere, generating air pollution that is the cause for several respiratory diseases and also result in genetic problems in both plants and animals. Even while human actions like deforestation didn't directly cause pollution, they nonetheless make the planet less able to combat it. Natural air filters and buffer zones are provided by forests. In addition to absorbing noise pollution, they also convert carbon dioxide into vital oxygen. When more forests are destroyed, the concentration of these harmful chemicals in the atmosphere rises, which has a negative impact on both human and animal health.

The natural order of our ecosystems has been disturbed by pollution, which has had serious negative impacts on the inhabitants of Earth. Unchecked and unlawful activities that abuse natural resources and disregard regulations established by pollution control boards around the nation are the main cause of pollution. A pollutant can be in any form. It might be a liquid, a solid, or even a gas. No matter what condition the pollutant is in, if it is not controlled, it could have catastrophic repercussions on our natural ecosystem.

Factors Leading To Pollution

We've covered a few of the key causes of environmental contamination below. All of the elements are related to human activities and the human desire to extend, explore, and grow.

Plastic Usage | One of the primary contributors to environmental degradation is the excessive use of plastic in consumable products like bags and other consumable materials. Plastic is not biodegradable and will remain in the environment in its current form for generations. Thin plastic bags shatter into tiny fragments that end up in the land and water bodies, polluting them.

Industrialisation | Our pursuit of economic development has given rise to several industries around the world. As a result, many manufacturing businesses release harmful gases into the atmosphere. Industrial emissions may also include solids, chemicals, and harmful gases. These compounds are freely released into the environment by industries due to a lack of appropriate policies, which in turn results in environmental damage.

Fossil Fuels | The primary fuel for transportation vehicles is fossil fuels. Carbon dioxide and carbon monoxide are byproducts of burning fossil fuels. The quantity of these harmful chemicals in the atmosphere increases as the number of automobiles on the road increases. Additionally, businesses that produce fossil fuels release toxic gaseous compounds that are particularly bad for the environment.

Heavy Machinery And Development | Every minute, new buildings are being built; within a few hours, people and equipment can be transported between locations using large jet liners and transportation vehicles. The biggest sources of noise pollution are these large equipment used in construction and aircrafts. Despite not being as serious as air and water pollution, noise pollution nevertheless has a negative influence on both the environment and human health.

Agricultural Activities | Agricultural practices, such as the use of chemical fertilisers, damage the soil, causing soil pollution. Modern fertilisers contain chemicals that, while temporarily increasing crop productivity, are bad for the environment in the long run. These substances mix with the soil and are later carried away by runoff into our surface and groundwater supplies.

How To Combat Pollution

After becoming aware of the damaging effects of pollution, everyone has a duty to take steps to prevent it. We should be aware of every precaution that can be taken to reduce pollution. For instance, we should avoid using fireworks during celebrations, use public transit or carpool, use loudspeakers sparingly, and stop from honking in public to lessen noise pollution. We must keep this situation in mind at all times so that we can react appropriately. It is our responsibility to practise caution and spread awareness among people around us at first. We should take actions that are good for the environment, including planting more trees, using less plastic, using more eco-friendly household items, etc.When addressing global pollution, always keep in mind that every small action now will have a greater impact tomorrow.

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A career as ethical hacker involves various challenges and provides lucrative opportunities in the digital era where every giant business and startup owns its cyberspace on the world wide web. Individuals in the ethical hacker career path try to find the vulnerabilities in the cyber system to get its authority. If he or she succeeds in it then he or she gets its illegal authority. Individuals in the ethical hacker career path then steal information or delete the file that could affect the business, functioning, or services of the organization.

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An expert in plumbing is aware of building regulations and safety standards and works to make sure these standards are upheld. Testing pipes for leakage using air pressure and other gauges, and also the ability to construct new pipe systems by cutting, fitting, measuring and threading pipes are some of the other more involved aspects of plumbing. Individuals in the plumber career path are self-employed or work for a small business employing less than ten people, though some might find working for larger entities or the government more desirable.

Construction Manager

Individuals who opt for a career as construction managers have a senior-level management role offered in construction firms. Responsibilities in the construction management career path are assigning tasks to workers, inspecting their work, and coordinating with other professionals including architects, subcontractors, and building services engineers.

Urban Planner

Urban Planning careers revolve around the idea of developing a plan to use the land optimally, without affecting the environment. Urban planning jobs are offered to those candidates who are skilled in making the right use of land to distribute the growing population, to create various communities.

Urban planning careers come with the opportunity to make changes to the existing cities and towns. They identify various community needs and make short and long-term plans accordingly.

Highway Engineer

Highway Engineer Job Description: A Highway Engineer is a civil engineer who specialises in planning and building thousands of miles of roads that support connectivity and allow transportation across the country. He or she ensures that traffic management schemes are effectively planned concerning economic sustainability and successful implementation.

Environmental Engineer

Individuals who opt for a career as an environmental engineer are construction professionals who utilise the skills and knowledge of biology, soil science, chemistry and the concept of engineering to design and develop projects that serve as solutions to various environmental problems.

Naval Architect

A Naval Architect is a professional who designs, produces and repairs safe and sea-worthy surfaces or underwater structures. A Naval Architect stays involved in creating and designing ships, ferries, submarines and yachts with implementation of various principles such as gravity, ideal hull form, buoyancy and stability.

Orthotist and Prosthetist

Orthotists and Prosthetists are professionals who provide aid to patients with disabilities. They fix them to artificial limbs (prosthetics) and help them to regain stability. There are times when people lose their limbs in an accident. In some other occasions, they are born without a limb or orthopaedic impairment. Orthotists and prosthetists play a crucial role in their lives with fixing them to assistive devices and provide mobility.

Veterinary Doctor

Pathologist.

A career in pathology in India is filled with several responsibilities as it is a medical branch and affects human lives. The demand for pathologists has been increasing over the past few years as people are getting more aware of different diseases. Not only that, but an increase in population and lifestyle changes have also contributed to the increase in a pathologist’s demand. The pathology careers provide an extremely huge number of opportunities and if you want to be a part of the medical field you can consider being a pathologist. If you want to know more about a career in pathology in India then continue reading this article.

Speech Therapist

Gynaecologist.

Gynaecology can be defined as the study of the female body. The job outlook for gynaecology is excellent since there is evergreen demand for one because of their responsibility of dealing with not only women’s health but also fertility and pregnancy issues. Although most women prefer to have a women obstetrician gynaecologist as their doctor, men also explore a career as a gynaecologist and there are ample amounts of male doctors in the field who are gynaecologists and aid women during delivery and childbirth.

An oncologist is a specialised doctor responsible for providing medical care to patients diagnosed with cancer. He or she uses several therapies to control the cancer and its effect on the human body such as chemotherapy, immunotherapy, radiation therapy and biopsy. An oncologist designs a treatment plan based on a pathology report after diagnosing the type of cancer and where it is spreading inside the body.

Audiologist

The audiologist career involves audiology professionals who are responsible to treat hearing loss and proactively preventing the relevant damage. Individuals who opt for a career as an audiologist use various testing strategies with the aim to determine if someone has a normal sensitivity to sounds or not. After the identification of hearing loss, a hearing doctor is required to determine which sections of the hearing are affected, to what extent they are affected, and where the wound causing the hearing loss is found. As soon as the hearing loss is identified, the patients are provided with recommendations for interventions and rehabilitation such as hearing aids, cochlear implants, and appropriate medical referrals. While audiology is a branch of science that studies and researches hearing, balance, and related disorders.

Hospital Administrator

The hospital Administrator is in charge of organising and supervising the daily operations of medical services and facilities. This organising includes managing of organisation’s staff and its members in service, budgets, service reports, departmental reporting and taking reminders of patient care and services.

For an individual who opts for a career as an actor, the primary responsibility is to completely speak to the character he or she is playing and to persuade the crowd that the character is genuine by connecting with them and bringing them into the story. This applies to significant roles and littler parts, as all roles join to make an effective creation. Here in this article, we will discuss how to become an actor in India, actor exams, actor salary in India, and actor jobs.

Individuals who opt for a career as acrobats create and direct original routines for themselves, in addition to developing interpretations of existing routines. The work of circus acrobats can be seen in a variety of performance settings, including circus, reality shows, sports events like the Olympics, movies and commercials. Individuals who opt for a career as acrobats must be prepared to face rejections and intermittent periods of work. The creativity of acrobats may extend to other aspects of the performance. For example, acrobats in the circus may work with gym trainers, celebrities or collaborate with other professionals to enhance such performance elements as costume and or maybe at the teaching end of the career.

Video Game Designer

Career as a video game designer is filled with excitement as well as responsibilities. A video game designer is someone who is involved in the process of creating a game from day one. He or she is responsible for fulfilling duties like designing the character of the game, the several levels involved, plot, art and similar other elements. Individuals who opt for a career as a video game designer may also write the codes for the game using different programming languages.

Depending on the video game designer job description and experience they may also have to lead a team and do the early testing of the game in order to suggest changes and find loopholes.

Radio Jockey

Radio Jockey is an exciting, promising career and a great challenge for music lovers. If you are really interested in a career as radio jockey, then it is very important for an RJ to have an automatic, fun, and friendly personality. If you want to get a job done in this field, a strong command of the language and a good voice are always good things. Apart from this, in order to be a good radio jockey, you will also listen to good radio jockeys so that you can understand their style and later make your own by practicing.

A career as radio jockey has a lot to offer to deserving candidates. If you want to know more about a career as radio jockey, and how to become a radio jockey then continue reading the article.

Choreographer

The word “choreography" actually comes from Greek words that mean “dance writing." Individuals who opt for a career as a choreographer create and direct original dances, in addition to developing interpretations of existing dances. A Choreographer dances and utilises his or her creativity in other aspects of dance performance. For example, he or she may work with the music director to select music or collaborate with other famous choreographers to enhance such performance elements as lighting, costume and set design.

Videographer

Multimedia specialist.

A multimedia specialist is a media professional who creates, audio, videos, graphic image files, computer animations for multimedia applications. He or she is responsible for planning, producing, and maintaining websites and applications.

Social Media Manager

A career as social media manager involves implementing the company’s or brand’s marketing plan across all social media channels. Social media managers help in building or improving a brand’s or a company’s website traffic, build brand awareness, create and implement marketing and brand strategy. Social media managers are key to important social communication as well.

Copy Writer

In a career as a copywriter, one has to consult with the client and understand the brief well. A career as a copywriter has a lot to offer to deserving candidates. Several new mediums of advertising are opening therefore making it a lucrative career choice. Students can pursue various copywriter courses such as Journalism , Advertising , Marketing Management . Here, we have discussed how to become a freelance copywriter, copywriter career path, how to become a copywriter in India, and copywriting career outlook.

Careers in journalism are filled with excitement as well as responsibilities. One cannot afford to miss out on the details. As it is the small details that provide insights into a story. Depending on those insights a journalist goes about writing a news article. A journalism career can be stressful at times but if you are someone who is passionate about it then it is the right choice for you. If you want to know more about the media field and journalist career then continue reading this article.

For publishing books, newspapers, magazines and digital material, editorial and commercial strategies are set by publishers. Individuals in publishing career paths make choices about the markets their businesses will reach and the type of content that their audience will be served. Individuals in book publisher careers collaborate with editorial staff, designers, authors, and freelance contributors who develop and manage the creation of content.

In a career as a vlogger, one generally works for himself or herself. However, once an individual has gained viewership there are several brands and companies that approach them for paid collaboration. It is one of those fields where an individual can earn well while following his or her passion.

Ever since internet costs got reduced the viewership for these types of content has increased on a large scale. Therefore, a career as a vlogger has a lot to offer. If you want to know more about the Vlogger eligibility, roles and responsibilities then continue reading the article.

Individuals in the editor career path is an unsung hero of the news industry who polishes the language of the news stories provided by stringers, reporters, copywriters and content writers and also news agencies. Individuals who opt for a career as an editor make it more persuasive, concise and clear for readers. In this article, we will discuss the details of the editor's career path such as how to become an editor in India, editor salary in India and editor skills and qualities.

Linguistic meaning is related to language or Linguistics which is the study of languages. A career as a linguistic meaning, a profession that is based on the scientific study of language, and it's a very broad field with many specialities. Famous linguists work in academia, researching and teaching different areas of language, such as phonetics (sounds), syntax (word order) and semantics (meaning).

Other researchers focus on specialities like computational linguistics, which seeks to better match human and computer language capacities, or applied linguistics, which is concerned with improving language education. Still, others work as language experts for the government, advertising companies, dictionary publishers and various other private enterprises. Some might work from home as freelance linguists. Philologist, phonologist, and dialectician are some of Linguist synonym. Linguists can study French , German , Italian .

Public Relation Executive

Travel journalist.

The career of a travel journalist is full of passion, excitement and responsibility. Journalism as a career could be challenging at times, but if you're someone who has been genuinely enthusiastic about all this, then it is the best decision for you. Travel journalism jobs are all about insightful, artfully written, informative narratives designed to cover the travel industry. Travel Journalist is someone who explores, gathers and presents information as a news article.

Quality Controller

A quality controller plays a crucial role in an organisation. He or she is responsible for performing quality checks on manufactured products. He or she identifies the defects in a product and rejects the product.

A quality controller records detailed information about products with defects and sends it to the supervisor or plant manager to take necessary actions to improve the production process.

Production Manager

Merchandiser.

A QA Lead is in charge of the QA Team. The role of QA Lead comes with the responsibility of assessing services and products in order to determine that he or she meets the quality standards. He or she develops, implements and manages test plans.

Metallurgical Engineer

A metallurgical engineer is a professional who studies and produces materials that bring power to our world. He or she extracts metals from ores and rocks and transforms them into alloys, high-purity metals and other materials used in developing infrastructure, transportation and healthcare equipment.

Azure Administrator

An Azure Administrator is a professional responsible for implementing, monitoring, and maintaining Azure Solutions. He or she manages cloud infrastructure service instances and various cloud servers as well as sets up public and private cloud systems.

AWS Solution Architect

An AWS Solution Architect is someone who specializes in developing and implementing cloud computing systems. He or she has a good understanding of the various aspects of cloud computing and can confidently deploy and manage their systems. He or she troubleshoots the issues and evaluates the risk from the third party.

Computer Programmer

Careers in computer programming primarily refer to the systematic act of writing code and moreover include wider computer science areas. The word 'programmer' or 'coder' has entered into practice with the growing number of newly self-taught tech enthusiasts. Computer programming careers involve the use of designs created by software developers and engineers and transforming them into commands that can be implemented by computers. These commands result in regular usage of social media sites, word-processing applications and browsers.

ITSM Manager

Information security manager.

Individuals in the information security manager career path involves in overseeing and controlling all aspects of computer security. The IT security manager job description includes planning and carrying out security measures to protect the business data and information from corruption, theft, unauthorised access, and deliberate attack

Business Intelligence Developer

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Air Pollution: Everything You Need to Know

How smog, soot, greenhouse gases, and other top air pollutants are affecting the planet—and your health.

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What is air pollution?

What causes air pollution, effects of air pollution, air pollution in the united states, air pollution and environmental justice, controlling air pollution, how to help reduce air pollution, how to protect your health.

Air pollution refers to the release of pollutants into the air—pollutants that are detrimental to human health and the planet as a whole. According to the World Health Organization (WHO) , each year, indoor and outdoor air pollution is responsible for nearly seven million deaths around the globe. Ninety-nine percent of human beings currently breathe air that exceeds the WHO’s guideline limits for pollutants, with those living in low- and middle-income countries suffering the most. In the United States, the Clean Air Act , established in 1970, authorizes the U.S. Environmental Protection Agency (EPA) to safeguard public health by regulating the emissions of these harmful air pollutants.

“Most air pollution comes from energy use and production,” says John Walke , director of the Clean Air team at NRDC. Driving a car on gasoline, heating a home with oil, running a power plant on fracked gas : In each case, a fossil fuel is burned and harmful chemicals and gases are released into the air.

“We’ve made progress over the last 50 years in improving air quality in the United States, thanks to the Clean Air Act. But climate change will make it harder in the future to meet pollution standards, which are designed to protect health ,” says Walke.

Air pollution is now the world’s fourth-largest risk factor for early death. According to the 2020 State of Global Air report —which summarizes the latest scientific understanding of air pollution around the world—4.5 million deaths were linked to outdoor air pollution exposures in 2019, and another 2.2 million deaths were caused by indoor air pollution. The world’s most populous countries, China and India, continue to bear the highest burdens of disease.

“Despite improvements in reducing global average mortality rates from air pollution, this report also serves as a sobering reminder that the climate crisis threatens to worsen air pollution problems significantly,” explains Vijay Limaye , senior scientist in NRDC’s Science Office. Smog, for instance, is intensified by increased heat, forming when the weather is warmer and there’s more ultraviolet radiation. In addition, climate change increases the production of allergenic air pollutants, including mold (thanks to damp conditions caused by extreme weather and increased flooding) and pollen (due to a longer pollen season). “Climate change–fueled droughts and dry conditions are also setting the stage for dangerous wildfires,” adds Limaye. “ Wildfire smoke can linger for days and pollute the air with particulate matter hundreds of miles downwind.”

The effects of air pollution on the human body vary, depending on the type of pollutant, the length and level of exposure, and other factors, including a person’s individual health risks and the cumulative impacts of multiple pollutants or stressors.

Smog and soot

These are the two most prevalent types of air pollution. Smog (sometimes referred to as ground-level ozone) occurs when emissions from combusting fossil fuels react with sunlight. Soot—a type of particulate matter —is made up of tiny particles of chemicals, soil, smoke, dust, or allergens that are carried in the air. The sources of smog and soot are similar. “Both come from cars and trucks, factories, power plants, incinerators, engines, generally anything that combusts fossil fuels such as coal, gasoline, or natural gas,” Walke says.

Smog can irritate the eyes and throat and also damage the lungs, especially those of children, senior citizens, and people who work or exercise outdoors. It’s even worse for people who have asthma or allergies; these extra pollutants can intensify their symptoms and trigger asthma attacks. The tiniest airborne particles in soot are especially dangerous because they can penetrate the lungs and bloodstream and worsen bronchitis, lead to heart attacks, and even hasten death. In 2020, a report from Harvard’s T.H. Chan School of Public Health showed that COVID-19 mortality rates were higher in areas with more particulate matter pollution than in areas with even slightly less, showing a correlation between the virus’s deadliness and long-term exposure to air pollution.

These findings also illuminate an important environmental justice issue . Because highways and polluting facilities have historically been sited in or next to low-income neighborhoods and communities of color, the negative effects of this pollution have been disproportionately experienced by the people who live in these communities.

Hazardous air pollutants

A number of air pollutants pose severe health risks and can sometimes be fatal, even in small amounts. Almost 200 of them are regulated by law; some of the most common are mercury, lead , dioxins, and benzene. “These are also most often emitted during gas or coal combustion, incineration, or—in the case of benzene—found in gasoline,” Walke says. Benzene, classified as a carcinogen by the EPA, can cause eye, skin, and lung irritation in the short term and blood disorders in the long term. Dioxins, more typically found in food but also present in small amounts in the air, is another carcinogen that can affect the liver in the short term and harm the immune, nervous, and endocrine systems, as well as reproductive functions. Mercury attacks the central nervous system. In large amounts, lead can damage children’s brains and kidneys, and even minimal exposure can affect children’s IQ and ability to learn.

Another category of toxic compounds, polycyclic aromatic hydrocarbons (PAHs), are by-products of traffic exhaust and wildfire smoke. In large amounts, they have been linked to eye and lung irritation, blood and liver issues, and even cancer. In one study , the children of mothers exposed to PAHs during pregnancy showed slower brain-processing speeds and more pronounced symptoms of ADHD.

Greenhouse gases

While these climate pollutants don’t have the direct or immediate impacts on the human body associated with other air pollutants, like smog or hazardous chemicals, they are still harmful to our health. By trapping the earth’s heat in the atmosphere, greenhouse gases lead to warmer temperatures, which in turn lead to the hallmarks of climate change: rising sea levels, more extreme weather, heat-related deaths, and the increased transmission of infectious diseases. In 2021, carbon dioxide accounted for roughly 79 percent of the country’s total greenhouse gas emissions, and methane made up more than 11 percent. “Carbon dioxide comes from combusting fossil fuels, and methane comes from natural and industrial sources, including large amounts that are released during oil and gas drilling,” Walke says. “We emit far larger amounts of carbon dioxide, but methane is significantly more potent, so it’s also very destructive.”

Another class of greenhouse gases, hydrofluorocarbons (HFCs) , are thousands of times more powerful than carbon dioxide in their ability to trap heat. In October 2016, more than 140 countries signed the Kigali Agreement to reduce the use of these chemicals—which are found in air conditioners and refrigerators—and develop greener alternatives over time. (The United States officially signed onto the Kigali Agreement in 2022.)

Pollen and mold

Mold and allergens from trees, weeds, and grass are also carried in the air, are exacerbated by climate change, and can be hazardous to health. Though they aren’t regulated, they can be considered a form of air pollution. “When homes, schools, or businesses get water damage, mold can grow and produce allergenic airborne pollutants,” says Kim Knowlton, professor of environmental health sciences at Columbia University and a former NRDC scientist. “ Mold exposure can precipitate asthma attacks or an allergic response, and some molds can even produce toxins that would be dangerous for anyone to inhale.”

Pollen allergies are worsening because of climate change . “Lab and field studies are showing that pollen-producing plants—especially ragweed—grow larger and produce more pollen when you increase the amount of carbon dioxide that they grow in,” Knowlton says. “Climate change also extends the pollen production season, and some studies are beginning to suggest that ragweed pollen itself might be becoming a more potent allergen.” If so, more people will suffer runny noses, fevers, itchy eyes, and other symptoms. “And for people with allergies and asthma, pollen peaks can precipitate asthma attacks, which are far more serious and can be life-threatening.”

More than one in three U.S. residents—120 million people—live in counties with unhealthy levels of air pollution, according to the 2023 State of the Air report by the American Lung Association (ALA). Since the annual report was first published, in 2000, its findings have shown how the Clean Air Act has been able to reduce harmful emissions from transportation, power plants, and manufacturing.

Recent findings, however, reflect how climate change–fueled wildfires and extreme heat are adding to the challenges of protecting public health. The latest report—which focuses on ozone, year-round particle pollution, and short-term particle pollution—also finds that people of color are 61 percent more likely than white people to live in a county with a failing grade in at least one of those categories, and three times more likely to live in a county that fails in all three.

In rankings for each of the three pollution categories covered by the ALA report, California cities occupy the top three slots (i.e., were highest in pollution), despite progress that the Golden State has made in reducing air pollution emissions in the past half century. At the other end of the spectrum, these cities consistently rank among the country’s best for air quality: Burlington, Vermont; Honolulu; and Wilmington, North Carolina.

No one wants to live next door to an incinerator, oil refinery, port, toxic waste dump, or other polluting site. Yet millions of people around the world do, and this puts them at a much higher risk for respiratory disease, cardiovascular disease, neurological damage, cancer, and death. In the United States, people of color are 1.5 times more likely than whites to live in areas with poor air quality, according to the ALA.

Historically, racist zoning policies and discriminatory lending practices known as redlining have combined to keep polluting industries and car-choked highways away from white neighborhoods and have turned communities of color—especially low-income and working-class communities of color—into sacrifice zones, where residents are forced to breathe dirty air and suffer the many health problems associated with it. In addition to the increased health risks that come from living in such places, the polluted air can economically harm residents in the form of missed workdays and higher medical costs.

Environmental racism isn't limited to cities and industrial areas. Outdoor laborers, including the estimated three million migrant and seasonal farmworkers in the United States, are among the most vulnerable to air pollution—and they’re also among the least equipped, politically, to pressure employers and lawmakers to affirm their right to breathe clean air.

Recently, cumulative impact mapping , which uses data on environmental conditions and demographics, has been able to show how some communities are overburdened with layers of issues, like high levels of poverty, unemployment, and pollution. Tools like the Environmental Justice Screening Method and the EPA’s EJScreen provide evidence of what many environmental justice communities have been explaining for decades: that we need land use and public health reforms to ensure that vulnerable areas are not overburdened and that the people who need resources the most are receiving them.

In the United States, the Clean Air Act has been a crucial tool for reducing air pollution since its passage in 1970, although fossil fuel interests aided by industry-friendly lawmakers have frequently attempted to weaken its many protections. Ensuring that this bedrock environmental law remains intact and properly enforced will always be key to maintaining and improving our air quality.

But the best, most effective way to control air pollution is to speed up our transition to cleaner fuels and industrial processes. By switching over to renewable energy sources (such as wind and solar power), maximizing fuel efficiency in our vehicles, and replacing more and more of our gasoline-powered cars and trucks with electric versions, we'll be limiting air pollution at its source while also curbing the global warming that heightens so many of its worst health impacts.

And what about the economic costs of controlling air pollution? According to a report on the Clean Air Act commissioned by NRDC, the annual benefits of cleaner air are up to 32 times greater than the cost of clean air regulations. Those benefits include up to 370,000 avoided premature deaths, 189,000 fewer hospital admissions for cardiac and respiratory illnesses, and net economic benefits of up to $3.8 trillion for the U.S. economy every year.

“The less gasoline we burn, the better we’re doing to reduce air pollution and the harmful effects of climate change,” Walke explains. “Make good choices about transportation. When you can, ride a bike, walk, or take public transportation. For driving, choose a car that gets better miles per gallon of gas or buy an electric car .” You can also investigate your power provider options—you may be able to request that your electricity be supplied by wind or solar. Buying your food locally cuts down on the fossil fuels burned in trucking or flying food in from across the world. And most important: “Support leaders who push for clean air and water and responsible steps on climate change,” Walke says.

“When you see in the news or hear on the weather report that pollution levels are high, it may be useful to limit the time when children go outside or you go for a jog,” Walke says. Generally, ozone levels tend to be lower in the morning.
If you exercise outside, stay as far as you can from heavily trafficked roads. Then shower and wash your clothes to remove fine particles.
The air may look clear, but that doesn’t mean it’s pollution free. Utilize tools like the EPA’s air pollution monitor, AirNow , to get the latest conditions. If the air quality is bad, stay inside with the windows closed.
If you live or work in an area that’s prone to wildfires, stay away from the harmful smoke as much as you’re able. Consider keeping a small stock of masks to wear when conditions are poor. The most ideal masks for smoke particles will be labelled “NIOSH” (which stands for National Institute for Occupational Safety and Health) and have either “N95” or “P100” printed on it.
If you’re using an air conditioner while outdoor pollution conditions are bad, use the recirculating setting to limit the amount of polluted air that gets inside.

This story was originally published on November 1, 2016, and has been updated with new information and links.

This NRDC.org story is available for online republication by news media outlets or nonprofits under these conditions: The writer(s) must be credited with a byline; you must note prominently that the story was originally published by NRDC.org and link to the original; the story cannot be edited (beyond simple things such as grammar); you can’t resell the story in any form or grant republishing rights to other outlets; you can’t republish our material wholesale or automatically—you need to select stories individually; you can’t republish the photos or graphics on our site without specific permission; you should drop us a note to let us know when you’ve used one of our stories.

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Essay on Pollution

Table of Contents

Environmental pollution is a global problem that affects people all over the world, and it is one of our planet’s most pressing issues today. And it is for this reason that we frequently encounter this essay within the writing area. This blog attempts to assist you in drafting a pollution essay by providing all of the relevant facts.

What is Pollution?

The term pollution is defined as the presence of any harmful substance in something. When we talk about pollution we mean the contamination of natural resources by these harmful substances called pollutants.. The pollution causes imbalance in the environment, this threatens the very survival of all forms of life. The effects of pollution are humongous and it is severely damaging our earth.

Pollution is a major issue in industrialized societies. The development of industry and the green revolution have had a negative impact on the environment. The natural ecological system has been disrupted by the conversion of natural resources to human resources. Therefore we need to take this matter seriously and tackle this issue straightaway. We need to realize its effects and serious measures must be taken to reduce pollution to the core.

Types of Pollution

Air Pollution: When dangerous or excessive quantities of pollutants such as smoke and harmful gases from industry, CFCs and oxides created by automobiles, the burning of solid wastes, and so on are introduced into the environment, air pollution occurs.

Water Pollution : The contamination of water bodies such as the ocean, seas, lakes, rivers and groundwater, mainly because of human activities. Chemical fertilisers, industrial waste, sewage and wastewater, mining activities, and marine dumping are all examples of harmful substances that contribute to water pollution.

Soil Pollution: Excessive use of fertilizers and pesticides, industrial waste etc resulted in the contamination of soil. One of the rare types of soil pollution occurs because of radioactive waste.

Noise Pollution: It occurs when the level of noise exceeds the normal level due to the usage of machines, loudspeakers, microphones, loud music, noises from industries etc.

Causes and health effects of Pollution

Format of essay on pollution.

When writing a pollution essay, you must adhere to the standard format for essay writing.

Introduction, body of content, and conclusion are the three most important elements of an essay format. Flexibility, on the other hand, is critical to essay writing. Allow the topic and specific word limit to guide the writing while keeping this basic essay format in mind.

Introduction : You can begin your pollution essay by defining its meaning and giving a brief overview of how and when it happened.

Body of content: Now describe your topic in detail, however, keep your word limit in your mind. If you are writing for a word limit of 200 to 350 then write a body of 120 to 100 words.

Conclusion: A conclusion is more than just “the last paragraph”; it’s an integral aspect of the paper’s structure. This is the part to encourage your reader to consider the wider implications of your issue.

Sample essay on Pollution in 250-300 Words

Environmental pollution is a global issue that plagues people all over the world, and it is one of the most critical problems of our planet today. It occurs in several ways, like contaminating the air we breathe or the water we use for various purposes.

The earth is in continuous motion and the one thing that the principle of nature teaches us is that we should never disrupt the harmony in which the ecosystem is working. Interfering with natural processes can have long-term consequences that can bring Earth towards mass destruction. Pollutants must be recognized and dealt with efficiently in order to pull off a last effort for the benefit of our fellow co-habitants as the exposure of pollution is worse than it was ever before. No matter the type of pollution it will affect the things necessary for human survival, e.g. water, air, soil. and we can see its effects in the form of global warming and air pollution is the root cost behind it. Air pollution is one of the key challenges that have arisen as a result of increased carbon-dioxide level in the atmosphere, as well as the increase in pollutants that are polluting the air and causing various diseases and climate warming.

The concept of three R’s which means to reduce, reuse and recycle is good to implement in our daily lives. People throughout the world should work together to reduce pollution’s effects so that future generations can live in a healthy, pollution-free environment

Sample Essay on Pollution in 300-350 Words

Pollution is an intermixing of harmful substances known as pollutants in the natural resources and natural environmental components. There are multiple forms of pollution like air pollution, water pollution, soil pollution and noise pollution. No matter what kind of pollution we are dealing with. It can have devastating effects. Pollution has disrupted the natural order of our ecosystem, wreaking havoc on the earth’s inhabitants. Unchecked and unlawful activities that exploit natural resources and do not follow criteria set by pollution control boards in the country are the main causes of pollution. If a pollutant is allowed unregulated it can have serious harmful effects on our ecosystem, regardless of its status.

Water pollution is the major concern of many countries in the world. Without clean and drinkable water, we can’t survive. So if and when all water bodies in the world will get contaminated the human race will perish. Air pollution is the next major concern; many cities in the world are facing severe problems because of air pollution which mainly happens because of the emission of toxic exhumes from vehicles and the burning of coal energy.

World leaders are coming up with various initiatives and schemes to fight pollution however the help of individuals are needed. Start by using cloth bags instead of plastic shopping bags, stop littering on the roadways and stop wasting clean water. These are just a few simple steps to follow to make a great difference in the environment. Moreover, to reduce pollution and achieve a healthy and pollution-free environment, we must work together.

Tips on how to write an essay on Pollution

Make an outline first and foremost. And write all the sub-headings there so that you will be able to reorganize and remember all the information you want to include
Remember to use all types of pollution: air, soil, water and noise.
Add factual information
Write all the causes and effects you know
Write precisely
Make sure that everything in the three parts of your pollution essay is connected.

Tips on Reducing Pollution

Embrace the three R’s: reduce, reuse and recycle
Say no to plastic! Reduce the use of non-biodegradable things
Plant more trees
Use public transportation
Avoid burning leaves, trash and other material.
Less use of chemicals: food should be produced without the use of pesticides.

As it is one of the most pressing issues of the world today, it has a high chance of appearing as an essay in your next examination (with one or two different choices). We hope with the essay help of this blog you will be able to understand what a pollution essay must include.

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Pollution and Its Effects Essay

Essay on Pollution and Its Effects

The term pollution is ubiquitous these days, even among children. The fact that pollution is rising continuously has become so prevalent that almost everyone acknowledges it. In pollution, we mean a substance that has been introduced uninvited into something. Various pollutants are contaminating the earth's natural resources when we talk about pollution. These effects are mainly caused by human activities that harm the environment in a number of ways. As a result, it is vital that this problem is addressed immediately. We need to recognize the effects of pollution and prevent its harm to our earth, which means we need to prevent these devastating effects. Here, we will look at what pollution is, how it occurs, and what we can do about it.

The Effects of Pollution

It is impossible to imagine how much pollution affects one's quality of life. The process occurs in mysterious ways, sometimes unobservable to the naked eye. Despite its enigmatic nature, it is profoundly present in the surrounding environment. Natural gases are present in the air even though you may not see them. Similar to the pollutants that are polluting the air and increasing carbon dioxide levels, pollutants pose a great threat to humans. Global warming is a consequence of increasing levels of carbon dioxide.

Additionally, the water will be polluted due to industrial development, religious practices and other practices leading to a shortage of drinking water. The need for water is essential to our existence. A waste dump that ends up in the soil eventually becomes toxic because of the way it is disposed of. In the future, we will no longer have fertile soil to grow crops on if the rate of land pollution continues. We must take immediate steps to reduce the level of land pollution.

What are the Best Ways to Reduce Pollution?

It is important to take action as soon as possible to prevent or reduce pollution after learning of the harmful effects of pollution. Taking public transportation or carpooling reduces vehicle emissions, hence reducing air pollution. Aside from reducing air and noise pollution, avoiding firecrackers at festivals and celebrations may also reduce air pollution. Recycling is essential to reducing air pollution in general. It pollutes the oceans and land when used plastic ends up in them.

After using these utensils, be sure to reuse them as long as you can, rather than throw them away after using them. As well as encouraging everyone to plant more trees, which absorb harmful gases and clean the air, we need to encourage everyone to plant more trees. At a national level, the government should limit fertilizer use to ensure the nutrient content of the soil. Further, pollution of oceans and rivers must be dealt with by preventing industries from dumping their waste into them.

The bottom line is that all pollutant types are hazardous and have serious consequences. Whether it is a personal initiative or an industry-wide initiative, everyone must take steps to change. It is necessary to join forces now since solving this problem will require a collective effort. Additionally, such human actions are causing the deaths of innocent animals. We must all take a stand and speak out for those who cannot speak for themselves in order to protect this planet from pollution.

Short Essay

The pollution problem in the world today is one of the most disturbing. We will talk about the extent of these effects and their harmful effects in this short paper on pollution and its effects in English. In this essay on pollution and its effects, the author aims to eradicate pollution from the earth. In this essay on pollution and its causes, we will discuss our responsibilities as citizens. The next generation has to learn how to fight pollution with proper equipment while reducing waste.

Planting trees and taking care of our environment will help us prevent pollution levels from rising. The oil spills in the sea can be checked, and industrial wastes dumping into the water can be stopped to prevent pollution of the marine environment. To combat pollution and how serious its effects can be, we should not only take steps but also teach our children to do the same.

Types of Pollution

Air Pollution

Water Pollution

Soil Pollution

The following paragraph provides some information about the effects of pollution on the environment which can help us to take measures against it to protect life on earth for future generations. In order to eradicate pollution and make the world a greener place, we must all take these steps.

FAQs on Pollution and Its Effects Essay

1. What are the impacts of Air Pollution?

Elevated levels of air contamination can cause an expanded danger of coronary failure, wheezing, hacking, and breathing issues, and bothering of the eyes, nose, and throat. Air contamination can likewise cause declining in existing heart issues, asthma, and other lung confusions. Like people, creatures can experience the ill effects of various medical conditions because of air contamination, including birth abandons, regenerative disappointment, and illnesses. Corrosive downpour contains significant levels of nitric and sulfuric acids that are made by oxides and sulfur oxides delivered into the air by the consumption of non-renewable energy sources.

2. What are the effects of Water Pollution?

The impacts of water contamination rely upon which synthetics are being unloaded where. Waterways that are close to urbanized zones will, in general, be vigorously dirtied by dumbing of trash and synthetic compounds, both lawfully and illicitly, by modern plants, wellbeing focuses, and people. By a long shot, the greatest outcome of water contamination is the demise of amphibian animals, which can upset the whole natural way of life. Poisons, for example, cadmium, mercury, and lead are eaten by little oceanic life forms that are then eaten by fish and shellfish, getting more thought with each progression up the natural pecking order and causing major issues in people and untamed life.

3. What are the effects of pollution?

Humans are affected by pollution on a daily basis. The air we breathe and almost every form of water we drink is degraded by it. Environmental degradation contributes to illness.

4. What can be done to reduce pollution?

To reduce pollution, each of us must take action. They should plant more trees, and they should decompose their waste more mindfully. Furthermore, it is a good idea to recycle where possible and make the environment cleaner.

5. How does water pollution affect us?

Depending on the type of synthetics being dumped where water contamination impacts are different. Those waterways near urbanized zones will, in general, be heavily polluted by humans, modern plants, and wellbeing centers, as well as by trash dumps and synthetic compounds lawfully and illegally. Water contamination is one of the major causes of amphibian demise, which affects natural ecosystems in a profound way. As the natural pecking order advances, poisons like mercury, cadmium, and lead get more and more concentrated as they are eaten by marine life, causing major health problems for people and the environment.

6. What is the importance of pollution prevention?

In addition to protecting the environment by conserving and protecting natural resources, pollution prevention improves economic growth by spreading more efficient production among industries and by reducing waste management requirements for households, businesses, and communities.

Essay on Pollution In English For Students

Essay on Pollution for Students: Explore Essay on pollution in varying lengths, including 100, 150, 200, 600, and 800 words.

November 19, 2023

Table of Contents

Essay on Pollution: Pollution is a big problem that happens when harmful things get into the air, water, and land around us. It can be from factories, cars, or even how we throw away our trash. Pollution is not good because it can make people and animals sick and can even change the weather. It’s not just a problem in one place – it’s everywhere, and it affects the whole world. In this essay, we’re going to talk about the different kinds of pollution, where it comes from, and why we all need to work together to make things better for our planet.

Short Essay on Pollution

Below, we present concise and comprehensive essays on pollution in English to enhance your understanding. Upon reviewing these essays, you will gain insights into the definition of pollution, its primary causes, methods for prevention, and more. These resources can prove valuable for your academic assignments, such as essay writing, speech delivery, or paragraph composition in school or college.

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Essay on Pollution in 100 Words

Pollution happens when harmful stuff gets into nature and makes things bad. There are different kinds of pollution like dirty air, dirty water, dirty soil, too much noise, and too much light. The sources of pollution are diverse, ranging from industrial activities to household waste. Pollution has severe consequences on ecosystems, human health, and the overall well-being of our planet. Addressing pollution is a collective responsibility that requires global awareness and sustainable practices. Governments play a crucial role in enforcing regulations, promoting renewable energy sources, and raising awareness about the importance of environmental conservation.

Essay on Pollution in 150 Words

Pollution is a pressing environmental issue affecting our planet. It occurs when harmful substances contaminate the air, water, or soil. The primary sources of pollution include industrial activities, vehicle emissions, improper waste disposal, and deforestation. Air pollution, caused by the release of pollutants into the atmosphere, leads to respiratory problems and climate change. Water pollution, resulting from the discharge of chemicals and waste into water bodies, poses a threat to aquatic life and human health.

Soil pollution occurs when pollutants, such as pesticides and industrial waste, degrade the quality of soil, impacting plant growth and food safety. Noise pollution, caused by excessive noise from various sources, can lead to stress and hearing loss. Light pollution disrupts natural ecosystems and affects wildlife behavior. To address pollution, individuals must adopt sustainable practices, industries must implement cleaner technologies, and governments must enforce stringent environmental regulations.

Essay on Pollution in 200 Words

Pollution is a global challenge that poses a threat to the health of our planet and its inhabitants. It manifests in various forms, including air, water, soil, noise, and light pollution. The consequences of pollution are far-reaching, affecting ecosystems, biodiversity, and human well-being. Industrial activities, urbanization, and improper waste management contribute significantly to pollution.

Air pollution, caused by the release of pollutants into the atmosphere, leads to respiratory diseases, climate change, and environmental degradation. Water pollution results from the discharge of chemicals, sewage, and industrial waste into rivers, lakes, and oceans, harming aquatic life and contaminating drinking water sources. Soil pollution occurs when pollutants like pesticides and heavy metals degrade the quality of soil, affecting plant growth and food safety.

Noise pollution, generated by traffic, industrial machinery, and other human activities, can have adverse effects on human health, causing stress, sleep disturbances, and hearing loss. Light pollution, caused by excessive artificial light in urban areas, disrupts natural ecosystems and interferes with the behavior of nocturnal animals.

Addressing pollution requires collective efforts at individual, community, and governmental levels. Individuals can contribute by adopting eco-friendly practices, reducing waste, and using sustainable modes of transportation. Industries must invest in cleaner technologies and adhere to strict environmental standards.

Long Essay on Pollution

Pollution is a complex and multifaceted environmental issue that poses a significant threat to the sustainability of our planet. It is the introduction of contaminants into the natural environment, resulting in adverse changes that affect ecosystems, biodiversity, and human health. Pollution can take various forms, including air pollution, water pollution, soil pollution, noise pollution, and light pollution, each with its unique set of challenges and consequences.

Sources of Pollution

The sources of pollution are diverse and often interconnected. Industrial activities, urbanization, transportation, agriculture, and improper waste management contribute significantly to the release of pollutants into the environment. Industrial processes emit a variety of pollutants, including greenhouse gases, particulate matter, and toxic chemicals, which can have detrimental effects on air quality and contribute to climate change.

Vehicle emissions, stemming from the burning of fossil fuels, release pollutants such as carbon monoxide, nitrogen oxides, and particulate matter into the atmosphere, contributing to air pollution and respiratory diseases. Improper disposal of waste, both solid and liquid, contaminates water bodies and soil, posing threats to aquatic life, plant health, and food safety.

Agricultural practices, including the use of pesticides and fertilizers, contribute to soil and water pollution, affecting both the environment and human health. Deforestation and urbanization disrupt natural ecosystems, leading to habitat loss and the displacement of wildlife. Noise pollution, resulting from human activities such as traffic, construction, and industrial processes, can have adverse effects on human health, causing stress, sleep disturbances, and hearing loss.

Consequences of Pollution

The consequences of pollution are severe and far-reaching. Air pollution is a major contributor to respiratory diseases, including asthma and chronic obstructive pulmonary disease (COPD). Long-term exposure to air pollutants such as particulate matter and nitrogen dioxide has been linked to cardiovascular diseases and adverse pregnancy outcomes.

Water pollution poses threats to aquatic life and human health. Contaminated water sources can lead to the spread of waterborne diseases, affecting millions of people globally. Soil pollution affects plant growth and food safety, as pollutants like pesticides and heavy metals accumulate in the soil and enter the food chain.

Noise pollution can have physiological and psychological effects, causing stress, sleep disturbances, and an increased risk of cardiovascular diseases. Light pollution disrupts natural ecosystems and interferes with the behavior of nocturnal animals, affecting their reproductive patterns and migration.

Global Impact

Pollution is not confined to local or regional boundaries; it has a global impact. Greenhouse gas emissions, primarily from the burning of fossil fuels, contribute to global warming and climate change. The rise in global temperatures leads to melting ice caps, rising sea levels, and extreme weather events, posing threats to unsafe ecosystems and communities.

The pollution of oceans with plastic waste has become a global crisis, with millions of tons of plastic entering the oceans annually. This not only harms marine life but also affects human health, as microplastics enter the food chain through seafood consumption.

Loss of biodiversity is another consequence of pollution, as ecosystems are disrupted and species face habitat destruction and pollution-induced stress. The decline of pollinators, such as bees, due to exposure to pesticides, has implications for agriculture and food security.

Addressing Pollution

Addressing pollution requires a comprehensive and collaborative approach at individual, community, and governmental levels. Individuals can contribute by adopting sustainable practices in their daily lives, such as reducing energy consumption, using eco-friendly products, and practicing responsible waste disposal.

Communities can organize clean-up initiatives, promote recycling programs, and raise awareness about the importance of environmental conservation. Educational institutions play a crucial role in fostering environmental awareness and sustainability practices among students.

Governments must enact and enforce stringent environmental regulations to curb pollution. Incentives for industries to adopt cleaner technologies, invest in renewable energy sources, and implement sustainable waste management practices are essential. International cooperation is crucial to address global environmental challenges, with countries working together to reduce greenhouse gas emissions, combat plastic pollution, and protect biodiversity.

Essay on Pollution in 800 Words

Pollution, the presence of unwanted substances known as pollutants in the environment, poses an immediate and severe threat to the delicate balance of our ecosystems. The recognition of the urgent need to address pollution is essential if we are to preserve the Earth and its biodiversity. This essay explores the various facets of pollution, its types, and the impact it has on major Indian cities such as Delhi, Noida, Ghaziabad, Lucknow, and Varanasi.

What is Pollution?

Pollution occurs when external compounds, primarily generated by human activities, enter the environment as unwanted entities known as pollutants. These pollutants cause significant harm to the environment, affecting water bodies, air, flora, and fauna. The consequences of pollution extend globally, contributing to phenomena like the greenhouse gas effect, global warming, and acid rain.

Effects of Pollution on Major Indian Cities

Imagine bustling cities in India, like Delhi or Varanasi, filled with life and energy. However, there’s a problem casting a shadow over this vibrancy – pollution. In this exploration, we’re going to look at how pollution affects the air, water, and soil in cities such as Delhi, Noida, Ghaziabad, Lucknow, and Varanasi. The goal is to understand the challenges these cities face and why it’s so important for everyone to work together to tackle pollution and ensure a healthier future.

Pollution Level in Delhi

Delhi, the National Capital Territory, faces a dire situation in terms of air quality index (AQI). According to the World Health Organization, Delhi ranks lowest among 1650 major cities worldwide. The air quality, especially during the winter months from October to December, rapidly deteriorates, reaching hazardous levels.

The AQI for Delhi remains moderate (101-200) from January to September but spikes during winter, often surpassing 500. Particulate Matter (PM2.5 and PM10) levels soar well beyond safe limits, primarily due to factors such as vehicular emissions, industrial activities, and the traditional practice of burning paddy crop roots in neighboring states.

Pollution Level in Noida

Noida, bordering Delhi in western Uttar Pradesh, faces similar challenges with poor air quality. Intensive construction activities, heavy vehicular pollution, and cold winter air contribute to the formation of a thick smog, impacting the Air Quality Index. The PM levels in Noida compete with Delhi, often reaching hazardous levels during the winter months.

Pollution Level in Ghaziabad

Ghaziabad frequently tops the list of North Indian cities with the worst AQI and pollution levels. Industrial pollution and waste burning are major contributors to Ghaziabad’s poor air quality. Located on the outskirts of the city, industries emit dense smoke, exacerbating pollution. The PM10 levels in Ghaziabad often surpass permissible limits, reaching alarming levels, especially during festivals like Diwali.

Pollution Level in Lucknow

Lucknow, the capital of Uttar Pradesh, experiences fluctuating AQI levels, ranging from moderate to poor. While not as severe as Delhi NCR, the air quality in Lucknow is still alarming, demanding concrete action. The quantity of suspended Particulate Matter has increased significantly in residential areas, posing health risks. The city’s air contains fine PM2.5 particles, reaching hazardous concentrations.

Pollution Level in Varanasi

Varanasi, the ancient pilgrimage city and the parliamentary constituency of Indian Prime Minister Narendra Modi, faces environmental challenges due to ongoing construction activities. Varanasi’s AQI is ranked third on the World Health Organization’s list of the fifteen most polluted cities globally. The ongoing construction work contributes to a decline in air quality, with AQI reaching up to 300, falling in the “Poor” category. Particulate Matter, especially PM2.5, poses health risks to the city’s residents.

The impacts of pollution are profound, impacting ecosystems, biodiversity, and the well-being of humans. Prolonged exposure to air pollutants is associated with cardiovascular diseases, while contaminated water sources contribute to the spread of waterborne diseases. Soil pollution poses risks to food safety, and noise pollution leads to stress and hearing loss. Additionally, light pollution disrupts wildlife behavior.

Importantly, pollution transcends local boundaries; its consequences are felt globally. Greenhouse gas emissions contribute significantly to global warming, causing adverse effects on climate patterns. The accumulation of plastic waste in oceans not only harms marine life but also infiltrates the food chain, posing threats to human health. Furthermore, pollution-induced stress and habitat destruction contribute to the loss of biodiversity, impacting ecosystems on a global scale.

Stringent environmental regulations need to be implemented and enforced by governments to combat pollution effectively. Offering incentives to industries for adopting cleaner technologies, investing in renewable energy sources, and practicing sustainable waste management is vital. International cooperation is essential to tackle global environmental challenges, with countries collaborating to decrease greenhouse gas emissions, combat plastic pollution, and safeguard biodiversity.

Pollution remains a pressing issue affecting major Indian cities, with severe implications for the environment and public health. The need for immediate and concerted efforts to address pollution is evident, as evidenced by the deteriorating air quality in cities like Delhi, Noida, Ghaziabad, Lucknow, and Varanasi. It is imperative that governments, industries, and individuals collaborate to adopt sustainable practices, enforce regulations, and invest in technologies that mitigate the environmental impact. Only through collective action can we hope to mitigate the menace of pollution and ensure a healthier and sustainable future for our planet.

Pollution is a critical environmental issue that demands urgent attention and concerted efforts at local, national, and global levels. The consequences of pollution are profound, affecting ecosystems, biodiversity, and human health. It is imperative that individuals, communities, industries, and governments work together to adopt sustainable practices, enforce regulations, and invest in technologies that minimize the environmental impact.

The battle against pollution requires a shift in mindset, where environmental sustainability becomes a priority in decision-making processes. By addressing pollution, we not only protect the health of our planet but also ensure a better quality of life for current and future generations. It is a collective responsibility to preserve the beauty and diversity of our natural environment and create a sustainable and harmonious coexistence between human activities and the ecosystems that support life on Earth.

Essay on Pollution FAQs

Pollution is the introduction of contaminants into the natural environment, leading to adverse changes. It can take various forms, including air, water, soil, noise, and light pollution.

Primary sources of pollution include industrial activities, vehicle emissions, improper waste disposal, deforestation, and agricultural practices that involve the use of pesticides and fertilizers.

Pollution has severe consequences on ecosystems, biodiversity, and human health. It can lead to respiratory diseases, waterborne illnesses, soil degradation, habitat loss, and disruptions in wildlife behavior.

Air pollution can cause respiratory diseases such as asthma and chronic obstructive pulmonary disease (COPD). Long-term exposure to air pollutants is linked to cardiovascular diseases and adverse pregnancy outcomes.

Water pollution occurs when chemicals and waste are discharged into water bodies. It poses a threat to aquatic life by contaminating their habitats and disrupting ecosystems. It can also affect human health through the consumption of contaminated water.

Environment Essay In English For School Students

Morning Walk Essay in English For School Students

A.I.-Generated Garbage Is Polluting Our Culture

A colorful illustration of a series of blue figures lined up on a bright pink floor with a red background. The farthest-left figure is that of a robot; every subsequent figure is slightly more mutated until the final figure at the right is strangely disfigured.

By Erik Hoel

Mr. Hoel is a neuroscientist and novelist and the author of The Intrinsic Perspective newsletter.

Increasingly, mounds of synthetic A.I.-generated outputs drift across our feeds and our searches. The stakes go far beyond what’s on our screens. The entire culture is becoming affected by A.I.’s runoff, an insidious creep into our most important institutions.

Consider science. Right after the blockbuster release of GPT-4, the latest artificial intelligence model from OpenAI and one of the most advanced in existence, the language of scientific research began to mutate. Especially within the field of A.I. itself.

Adjectives associated with A.I.-generated text have increased in peer reviews of scientific papers about A.I.

Frequency of adjectives per one million words

Commendable

A study published this month examined scientists’ peer reviews — researchers’ official pronouncements on others’ work that form the bedrock of scientific progress — across a number of high-profile and prestigious scientific conferences studying A.I. At one such conference, those peer reviews used the word “meticulous” more than 34 times as often as reviews did the previous year. Use of “commendable” was around 10 times as frequent, and “intricate,” 11 times. Other major conferences showed similar patterns.

Such phrasings are, of course, some of the favorite buzzwords of modern large language models like ChatGPT. In other words, significant numbers of researchers at A.I. conferences were caught handing their peer review of others’ work over to A.I. — or, at minimum, writing them with lots of A.I. assistance. And the closer to the deadline the submitted reviews were received, the more A.I. usage was found in them.

If this makes you uncomfortable — especially given A.I.’s current unreliability — or if you think that maybe it shouldn’t be A.I.s reviewing science but the scientists themselves, those feelings highlight the paradox at the core of this technology: It’s unclear what the ethical line is between scam and regular usage. Some A.I.-generated scams are easy to identify, like the medical journal paper featuring a cartoon rat sporting enormous genitalia. Many others are more insidious, like the mislabeled and hallucinated regulatory pathway described in that same paper — a paper that was peer reviewed as well (perhaps, one might speculate, by another A.I.?).

What about when A.I. is used in one of its intended ways — to assist with writing? Recently, there was an uproar when it became obvious that simple searches of scientific databases returned phrases like “As an A.I. language model” in places where authors relying on A.I. had forgotten to cover their tracks. If the same authors had simply deleted those accidental watermarks, would their use of A.I. to write their papers have been fine?

What’s going on in science is a microcosm of a much bigger problem. Post on social media? Any viral post on X now almost certainly includes A.I.-generated replies, from summaries of the original post to reactions written in ChatGPT’s bland Wikipedia-voice, all to farm for follows. Instagram is filling up with A.I.-generated models, Spotify with A.I.-generated songs. Publish a book? Soon after, on Amazon there will often appear A.I.-generated “workbooks” for sale that supposedly accompany your book (which are incorrect in their content; I know because this happened to me). Top Google search results are now often A.I.-generated images or articles. Major media outlets like Sports Illustrated have been creating A.I.-generated articles attributed to equally fake author profiles. Marketers who sell search engine optimization methods openly brag about using A.I. to create thousands of spammed articles to steal traffic from competitors.

Then there is the growing use of generative A.I. to scale the creation of cheap synthetic videos for children on YouTube. Some example outputs are Lovecraftian horrors, like music videos about parrots in which the birds have eyes within eyes, beaks within beaks, morphing unfathomably while singing in an artificial voice, “The parrot in the tree says hello, hello!” The narratives make no sense, characters appear and disappear randomly, and basic facts like the names of shapes are wrong. After I identified a number of such suspicious channels on my newsletter, The Intrinsic Perspective, Wired found evidence of generative A.I. use in the production pipelines of some accounts with hundreds of thousands or even millions of subscribers.

As a neuroscientist, this worries me. Isn’t it possible that human culture contains within it cognitive micronutrients — things like cohesive sentences, narrations and character continuity — that developing brains need? Einstein supposedly said : “If you want your children to be intelligent, read them fairy tales. If you want them to be very intelligent, read them more fairy tales.” But what happens when a toddler is consuming mostly A.I.-generated dream-slop? We find ourselves in the midst of a vast developmental experiment.

There’s so much synthetic garbage on the internet now that A.I. companies and researchers are themselves worried, not about the health of the culture, but about what’s going to happen with their models. As A.I. capabilities ramped up in 2022, I wrote on the risk of culture’s becoming so inundated with A.I. creations that when future A.I.s are trained, the previous A.I. output will leak into the training set, leading to a future of copies of copies of copies, as content became ever more stereotyped and predictable. In 2023 researchers introduced a technical term for how this risk affected A.I. training: model collapse . In a way, we and these companies are in the same boat, paddling through the same sludge streaming into our cultural ocean.

With that unpleasant analogy in mind, it’s worth looking to what is arguably the clearest historical analogy for our current situation: the environmental movement and climate change. For just as companies and individuals were driven to pollute by the inexorable economics of it, so, too, is A.I.’s cultural pollution driven by a rational decision to fill the internet’s voracious appetite for content as cheaply as possible. While environmental problems are nowhere near solved, there has been undeniable progress that has kept our cities mostly free of smog and our lakes mostly free of sewage. How?

Before any specific policy solution was the acknowledgment that environmental pollution was a problem in need of outside legislation. Influential to this view was a perspective developed in 1968 by Garrett Hardin, a biologist and ecologist. Dr. Hardin emphasized that the problem of pollution was driven by people acting in their own interest, and that therefore “we are locked into a system of ‘fouling our own nest,’ so long as we behave only as independent, rational, free-enterprisers.” He summed up the problem as a “tragedy of the commons.” This framing was instrumental for the environmental movement, which would come to rely on government regulation to do what companies alone could or would not.

Once again we find ourselves enacting a tragedy of the commons: short-term economic self-interest encourages using cheap A.I. content to maximize clicks and views, which in turn pollutes our culture and even weakens our grasp on reality. And so far, major A.I. companies are refusing to pursue advanced ways to identify A.I.’s handiwork — which they could do by adding subtle statistical patterns hidden in word use or in the pixels of images.

A common justification for inaction is that human editors can always fiddle around with whatever patterns are implemented if they know enough. Yet many of the issues we’re experiencing are not caused by motivated and technically skilled malicious actors; they’re caused mostly by regular users’ not adhering to a line of ethical use so fine as to be nigh nonexistent. Most would be uninterested in advanced countermeasures to statistical patterns enforced into outputs that should, ideally, mark them as A.I.-generated.

That’s why the independent researchers were able to detect A.I. outputs in the peer review system with surprisingly high accuracy: They actually tried. Similarly, right now teachers across the nation have created home-brewed output-side detection methods , like adding in hidden requests for patterns of word use to essay prompts that appear only when copy-pasted.

In particular, A.I. companies appear opposed to any patterns baked into their output that can improve A.I.-detection efforts to reasonable levels, perhaps because they fear that enforcing such patterns might interfere with the model’s performance by constraining its outputs too much — although there is no current evidence this is a risk. Despite public pledges to develop more advanced watermarking, it’s increasingly clear that the companies are dragging their feet because it goes against the A.I. industry’s bottom line to have detectable products.

To deal with this corporate refusal to act we need the equivalent of a Clean Air Act: a Clean Internet Act. Perhaps the simplest solution would be to legislatively force advanced watermarking intrinsic to generated outputs, like patterns not easily removable. Just as the 20th century required extensive interventions to protect the shared environment, the 21st century is going to require extensive interventions to protect a different, but equally critical, common resource, one we haven’t noticed up until now since it was never under threat: our shared human culture.

Erik Hoel is a neuroscientist, a novelist and the author of The Intrinsic Perspective newsletter.

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Essay On Pollution And Its Causes
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Essay on Causes of Pollution for all Class in 100 to 500 Words in English
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Essay on Pollution in 500 Words
Increased level of carbon dioxide will lead to global warming. Further, the water is polluted in the name of industrial development, religious practices and more will cause a shortage of drinking water. Without water, human life is not possible. Moreover, the way waste is dumped on the land eventually ends up in the soil and turns toxic.
Essay on Pollution: Elements, Type, Format & Samples
Sample Essay on Pollution in 250- 300 Words. The biggest threat planet earth is facing is pollution. Unwanted substances leave a negative impact once released into an environment. There are four types of pollution air, water, land, and noise. Pollution affects the quality of life more than any human can imagine.
Pollution
Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash. They can also be created by human activity, such as trash or runoff produced by factories. Pollutants damage the quality of air, water, and land.
Pollution
Jerry A. Nathanson. Pollution, addition of any substance or form of energy to the environment at a rate faster than it can be dispersed or stored in a harmless form. The major kinds of pollution are usually classified by environment and include air, water, and land pollution. Learn more about the history of pollution.
Types of Pollution Essay
200 Words Essay on Types of Pollution. Pollution is the result of the disruption of many natural cycles and processes. In addition, many species of plants and animals today are either extinct or at risk of dying out. Animals are rapidly losing their habitat as a result of the pollution's rapid rise. People all across the globe are impacted by ...
Types of Pollution: Sources, Causes, Effects, and Prevention
Pollution is defined as introducing harmful substances (solid, liquid, or gas) or any form of energy (light, heat, sound, or radioactivity) into the environment.The harmful elements that damage air, water, and land quality and cause pollution are called pollutants. Pollution is primarily human-made, but nature can have an adverse effect also sometimes acts as a source of pollution.
Essay on Pollution
An essay on pollution is an essential concept for students as it reveals the consequences of human activities on the environment. Read on to explore how to write an intriguing and engaging essay on pollution. ... Radioactive pollution is one of the rarer types of pollution. This type of pollution occurs naturally as well - elements such as ...
Environmental and Health Impacts of Air Pollution: A Review
Air pollution is distinguished into two main types: Outdoor pollution is the ambient air pollution. ... the main proposal of this essay is that we should focus on fostering local structures to promote experience and practice and extrapolate these to the international level through developing effective policies for sustainable management of ...
261 Pollution Essay Topics & Essay Examples
For example, if you are writing about air pollution, then the terms you use may range from "particulate matter" to "hygroscopicity," depending on the complexity of your essay's subject. Tip #4. The pollution essay thesis statement is a guiding line throughout your writing process.
Environmental Pollution: Causes and Consequences Essay
Environmental Pollution: Causes and Consequences Essay. Environmental pollution is the unwarranted discharge of mass or energy into the planet's natural resource pools, such as land, air, or water, which detriments the environment's ecological stability and the health of the living things that inhabit it. There is an intensified health risk ...
Pollution
t. e. Pollution is the introduction of contaminants into the natural environment that cause adverse change. [1] Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring ...
Essay on Environmental Pollution: 100 Words, 200 Words
Essay on Environmental Pollution - 500 Words . Pollution is the term used to describe the entry of pollutants into the environment. Noise, water, and air pollution are only a few of the several types of pollution. There is a direct relationship between the rise of pollution levels and illnesses among people.
Essay on Pollution, Types| Pollution Essay in English
Basically, there are four categories of pollution -. Air Pollution. Water Pollution. Soil Pollution. Noise or Sound pollution. Let's discuss the all the Pollution types one by one: Air Pollution: In general, air pollution is caused by the release of harmful substances into the air.
Types Of Pollution And Their Effects Environmental Sciences Essay
Air pollution causes depletion of the protective ozone layer. It also has dire health effects on the individuals living on earth; it may cause respiratory problems, asthma, lungs and heart diseases, etc. Air pollution also affects the cardiovascular system, but the effects depend on the individual's exposure to the pollutants.
Air Pollution
Air pollution consists of chemicals or particles in the air that can harm the health of humans, animals, and plants. It also damages buildings. Pollutants in the air take many forms. They can be gases, solid particles, or liquid droplets. Sources of Air Pollution Pollution enters the Earth's atmosphere in many different ways. Most air pollution is created by people, taking the form of ...
Pollution Essay in English for Students
Kinds of Pollution. There are mainly three kinds of pollution - 1) Air Pollution, 2) Water Pollution, and 3) Soil Pollution. Air Pollution occurs due to the presence of harmful gases and substances in the air. It is due to vehicle emission, dust and dirt, poisonous gasses from the factories etc.
Types of Pollution
Water Pollution. Soil Pollution. Noise Pollution. 30,600. There are various types of pollution chiefly arising as a result of anthropogenic causes. Also contributing to pollution is globalisation, where humanity's constant need for natural resources has slowly started to change the face of the earth.
Causes of Pollution Essay
100 Words Essay Causes of Pollution. Pollution is the release of undesired elements into the environment, which can harm our planet. Water pollution, air pollution, soil contamination, and noise pollution are the four basic forms of pollution. Our reckless actions have resulted in pollution of many types. We directly dump waste into bodies of ...
Air Pollution: Everything You Need to Know
A number of air pollutants pose severe health risks and can sometimes be fatal, even in small amounts. Almost 200 of them are regulated by law; some of the most common are mercury, lead, dioxins ...
Water pollution
water pollution, the release of substances into subsurface groundwater or into lakes, streams, rivers, estuaries, and oceans to the point that the substances interfere with beneficial use of the water or with the natural functioning of ecosystems. In addition to the release of substances, such as chemicals, trash, or microorganisms, water ...
Essay on Pollution
Sample essay on Pollution in 250-300 Words. Environmental pollution is a global issue that plagues people all over the world, and it is one of the most critical problems of our planet today. It occurs in several ways, like contaminating the air we breathe or the water we use for various purposes. The earth is in continuous motion and the one ...
Pollution and Its Effects Essay for Students in English
Short Essay. The pollution problem in the world today is one of the most disturbing. We will talk about the extent of these effects and their harmful effects in this short paper on pollution and its effects in English. In this essay on pollution and its effects, the author aims to eradicate pollution from the earth.
Essay On Pollution In English For Students
Essay on Pollution in 200 Words. Pollution is a global challenge that poses a threat to the health of our planet and its inhabitants. It manifests in various forms, including air, water, soil, noise, and light pollution. The consequences of pollution are far-reaching, affecting ecosystems, biodiversity, and human well-being.
Biofilms on plastic litter in an urban river: Community ...
This study provides valuable insights into the effects of substrate on biofilm characteristics, and the ecological impacts of plastic pollution on urban rivers.Practitioner Points Plastic physical and chemical properties act as forces of selection for biofilm. Biofilm activity was similar among three different types of plastic.
AI Garbage Is Already Polluting the Internet
For just as companies and individuals were driven to pollute by the inexorable economics of it, so, too, is A.I.'s cultural pollution driven by a rational decision to fill the internet's ...

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Environmental and Health Impacts of Air Pollution: A Review

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Approach to the Problem

Sources of Exposure

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Particulate Matter (PM) and Health

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Environmental Pollution: Causes and Consequences Essay

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