cause and effect essay about pollution

Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants.

Biology, Ecology, Health, Earth Science, Geography

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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. Many things that are useful to people produce pollution. Cars spew pollutants from their exhaust pipes. Burning coal to create electricity pollutes the air. Industries and homes generate garbage and sewage that can pollute the land and water. Pesticides —chemical poisons used to kill weeds and insects— seep into waterways and harm wildlife . All living things—from one-celled microbes to blue whales—depend on Earth ’s supply of air and water. When these resources are polluted, all forms of life are threatened. Pollution is a global problem. Although urban areas are usually more polluted than the countryside, pollution can spread to remote places where no people live. For example, pesticides and other chemicals have been found in the Antarctic ice sheet . In the middle of the northern Pacific Ocean, a huge collection of microscopic plastic particles forms what is known as the Great Pacific Garbage Patch . Air and water currents carry pollution. Ocean currents and migrating fish carry marine pollutants far and wide. Winds can pick up radioactive material accidentally released from a nuclear reactor and scatter it around the world. Smoke from a factory in one country drifts into another country. In the past, visitors to Big Bend National Park in the U.S. state of Texas could see 290 kilometers (180 miles) across the vast landscape . Now, coal-burning power plants in Texas and the neighboring state of Chihuahua, Mexico have spewed so much pollution into the air that visitors to Big Bend can sometimes see only 50 kilometers (30 miles). The three major types of pollution are air pollution , water pollution , and land pollution . Air Pollution Sometimes, air pollution is visible . A person can see dark smoke pour from the exhaust pipes of large trucks or factories, for example. More often, however, air pollution is invisible . Polluted air can be dangerous, even if the pollutants are invisible. It can make people’s eyes burn and make them have difficulty breathing. It can also increase the risk of lung cancer . Sometimes, air pollution kills quickly. In 1984, an accident at a pesticide plant in Bhopal, India, released a deadly gas into the air. At least 8,000 people died within days. Hundreds of thou sands more were permanently injured. Natural disasters can also cause air pollution to increase quickly. When volcanoes erupt , they eject volcanic ash and gases into the atmosphere . Volcanic ash can discolor the sky for months. After the eruption of the Indonesian volcano of Krakatoa in 1883, ash darkened the sky around the world. The dimmer sky caused fewer crops to be harvested as far away as Europe and North America. For years, meteorologists tracked what was known as the “equatorial smoke stream .” In fact, this smoke stream was a jet stream , a wind high in Earth’s atmosphere that Krakatoa’s air pollution made visible. Volcanic gases , such as sulfur dioxide , can kill nearby residents and make the soil infertile for years. Mount Vesuvius, a volcano in Italy, famously erupted in 79, killing hundreds of residents of the nearby towns of Pompeii and Herculaneum. Most victims of Vesuvius were not killed by lava or landslides caused by the eruption. They were choked, or asphyxiated , by deadly volcanic gases. In 1986, a toxic cloud developed over Lake Nyos, Cameroon. Lake Nyos sits in the crater of a volcano. Though the volcano did not erupt, it did eject volcanic gases into the lake. The heated gases passed through the water of the lake and collected as a cloud that descended the slopes of the volcano and into nearby valleys . As the toxic cloud moved across the landscape, it killed birds and other organisms in their natural habitat . This air pollution also killed thousands of cattle and as many as 1,700 people. Most air pollution is not natural, however. It comes from burning fossil fuels —coal, oil , and natural gas . When gasoline is burned to power cars and trucks, it produces carbon monoxide , a colorless, odorless gas. The gas is harmful in high concentrations , or amounts. City traffic produces highly concentrated carbon monoxide. Cars and factories produce other common pollutants, including nitrogen oxide , sulfur dioxide, and hydrocarbons . These chemicals react with sunlight to produce smog , a thick fog or haze of air pollution. The smog is so thick in Linfen, China, that people can seldom see the sun. Smog can be brown or grayish blue, depending on which pollutants are in it. Smog makes breathing difficult, especially for children and older adults. Some cities that suffer from extreme smog issue air pollution warnings. The government of Hong Kong, for example, will warn people not to go outside or engage in strenuous physical activity (such as running or swimming) when smog is very thick.

When air pollutants such as nitrogen oxide and sulfur dioxide mix with moisture, they change into acids . They then fall back to earth as acid rain . Wind often carries acid rain far from the pollution source. Pollutants produced by factories and power plants in Spain can fall as acid rain in Norway. Acid rain can kill all the trees in a forest . It can also devastate lakes, streams, and other waterways. When lakes become acidic, fish can’t survive . In Sweden, acid rain created thousands of “ dead lakes ,” where fish no longer live. Acid rain also wears away marble and other kinds of stone . It has erased the words on gravestones and damaged many historic buildings and monuments . The Taj Mahal , in Agra, India, was once gleaming white. Years of exposure to acid rain has left it pale. Governments have tried to prevent acid rain by limiting the amount of pollutants released into the air. In Europe and North America, they have had some success, but acid rain remains a major problem in the developing world , especially Asia. Greenhouse gases are another source of air pollution. Greenhouse gases such as carbon dioxide and methane occur naturally in the atmosphere. In fact, they are necessary for life on Earth. They absorb sunlight reflected from Earth, preventing it from escaping into space. By trapping heat in the atmosphere, they keep Earth warm enough for people to live. This is called the greenhouse effect . But human activities such as burning fossil fuels and destroying forests have increased the amount of greenhouse gases in the atmosphere. This has increased the greenhouse effect, and average temperatures across the globe are rising. The decade that began in the year 2000 was the warmest on record. This increase in worldwide average temperatures, caused in part by human activity, is called global warming . Global warming is causing ice sheets and glaciers to melt. The melting ice is causing sea levels to rise at a rate of two millimeters (0.09 inches) per year. The rising seas will eventually flood low-lying coastal regions . Entire nations, such as the islands of Maldives, are threatened by this climate change . Global warming also contributes to the phenomenon of ocean acidification . Ocean acidification is the process of ocean waters absorbing more carbon dioxide from the atmosphere. Fewer organisms can survive in warmer, less salty waters. The ocean food web is threatened as plants and animals such as coral fail to adapt to more acidic oceans. Scientists have predicted that global warming will cause an increase in severe storms . It will also cause more droughts in some regions and more flooding in others. The change in average temperatures is already shrinking some habitats, the regions where plants and animals naturally live. Polar bears hunt seals from sea ice in the Arctic. The melting ice is forcing polar bears to travel farther to find food , and their numbers are shrinking. People and governments can respond quickly and effectively to reduce air pollution. Chemicals called chlorofluorocarbons (CFCs) are a dangerous form of air pollution that governments worked to reduce in the 1980s and 1990s. CFCs are found in gases that cool refrigerators, in foam products, and in aerosol cans . CFCs damage the ozone layer , a region in Earth’s upper atmosphere. The ozone layer protects Earth by absorbing much of the sun’s harmful ultraviolet radiation . When people are exposed to more ultraviolet radiation, they are more likely to develop skin cancer, eye diseases, and other illnesses. In the 1980s, scientists noticed that the ozone layer over Antarctica was thinning. This is often called the “ ozone hole .” No one lives permanently in Antarctica. But Australia, the home of more than 22 million people, lies at the edge of the hole. In the 1990s, the Australian government began an effort to warn people of the dangers of too much sun. Many countries, including the United States, now severely limit the production of CFCs. Water Pollution Some polluted water looks muddy, smells bad, and has garbage floating in it. Some polluted water looks clean, but is filled with harmful chemicals you can’t see or smell. Polluted water is unsafe for drinking and swimming. Some people who drink polluted water are exposed to hazardous chemicals that may make them sick years later. Others consume bacteria and other tiny aquatic organisms that cause disease. The United Nations estimates that 4,000 children die every day from drinking dirty water. Sometimes, polluted water harms people indirectly. They get sick because the fish that live in polluted water are unsafe to eat. They have too many pollutants in their flesh. There are some natural sources of water pollution. Oil and natural gas, for example, can leak into oceans and lakes from natural underground sources. These sites are called petroleum seeps . The world’s largest petroleum seep is the Coal Oil Point Seep, off the coast of the U.S. state of California. The Coal Oil Point Seep releases so much oil that tar balls wash up on nearby beaches . Tar balls are small, sticky pieces of pollution that eventually decompose in the ocean.

Human activity also contributes to water pollution. Chemicals and oils from factories are sometimes dumped or seep into waterways. These chemicals are called runoff. Chemicals in runoff can create a toxic environment for aquatic life. Runoff can also help create a fertile environment for cyanobacteria , also called blue-green algae . Cyanobacteria reproduce rapidly, creating a harmful algal bloom (HAB) . Harmful algal blooms prevent organisms such as plants and fish from living in the ocean. They are associated with “ dead zones ” in the world’s lakes and rivers, places where little life exists below surface water. Mining and drilling can also contribute to water pollution. Acid mine drainage (AMD) is a major contributor to pollution of rivers and streams near coal mines . Acid helps miners remove coal from the surrounding rocks . The acid is washed into streams and rivers, where it reacts with rocks and sand. It releases chemical sulfur from the rocks and sand, creating a river rich in sulfuric acid . Sulfuric acid is toxic to plants, fish, and other aquatic organisms. Sulfuric acid is also toxic to people, making rivers polluted by AMD dangerous sources of water for drinking and hygiene . Oil spills are another source of water pollution. In April 2010, the Deepwater Horizon oil rig exploded in the Gulf of Mexico, causing oil to gush from the ocean floor. In the following months, hundreds of millions of gallons of oil spewed into the gulf waters. The spill produced large plumes of oil under the sea and an oil slick on the surface as large as 24,000 square kilometers (9,100 square miles). The oil slick coated wetlands in the U.S. states of Louisiana and Mississippi, killing marsh plants and aquatic organisms such as crabs and fish. Birds, such as pelicans , became coated in oil and were unable to fly or access food. More than two million animals died as a result of the Deepwater Horizon oil spill. Buried chemical waste can also pollute water supplies. For many years, people disposed of chemical wastes carelessly, not realizing its dangers. In the 1970s, people living in the Love Canal area in Niagara Falls, New York, suffered from extremely high rates of cancer and birth defects . It was discovered that a chemical waste dump had poisoned the area’s water. In 1978, 800 families living in Love Canal had to a bandon their homes. If not disposed of properly, radioactive waste from nuclear power plants can escape into the environment. Radioactive waste can harm living things and pollute the water. Sewage that has not been properly treated is a common source of water pollution. Many cities around the world have poor sewage systems and sewage treatment plants. Delhi, the capital of India, is home to more than 21 million people. More than half the sewage and other waste produced in the city are dumped into the Yamuna River. This pollution makes the river dangerous to use as a source of water for drinking or hygiene. It also reduces the river’s fishery , resulting in less food for the local community. A major source of water pollution is fertilizer used in agriculture . Fertilizer is material added to soil to make plants grow larger and faster. Fertilizers usually contain large amounts of the elements nitrogen and phosphorus , which help plants grow. Rainwater washes fertilizer into streams and lakes. There, the nitrogen and phosphorus cause cyanobacteria to form harmful algal blooms. Rain washes other pollutants into streams and lakes. It picks up animal waste from cattle ranches. Cars drip oil onto the street, and rain carries it into storm drains , which lead to waterways such as rivers and seas. Rain sometimes washes chemical pesticides off of plants and into streams. Pesticides can also seep into groundwater , the water beneath the surface of the Earth. Heat can pollute water. Power plants, for example, produce a huge amount of heat. Power plants are often located on rivers so they can use the water as a coolant . Cool water circulates through the plant, absorbing heat. The heated water is then returned to the river. Aquatic creatures are sensitive to changes in temperature. Some fish, for example, can only live in cold water. Warmer river temperatures prevent fish eggs from hatching. Warmer river water also contributes to harmful algal blooms. Another type of water pollution is simple garbage. The Citarum River in Indonesia, for example, has so much garbage floating in it that you cannot see the water. Floating trash makes the river difficult to fish in. Aquatic animals such as fish and turtles mistake trash, such as plastic bags, for food. Plastic bags and twine can kill many ocean creatures. Chemical pollutants in trash can also pollute the water, making it toxic for fish and people who use the river as a source of drinking water. The fish that are caught in a polluted river often have high levels of chemical toxins in their flesh. People absorb these toxins as they eat the fish. Garbage also fouls the ocean. Many plastic bottles and other pieces of trash are thrown overboard from boats. The wind blows trash out to sea. Ocean currents carry plastics and other floating trash to certain places on the globe, where it cannot escape. The largest of these areas, called the Great Pacific Garbage Patch, is in a remote part of the Pacific Ocean. According to some estimates, this garbage patch is the size of Texas. The trash is a threat to fish and seabirds, which mistake the plastic for food. Many of the plastics are covered with chemical pollutants. Land Pollution Many of the same pollutants that foul the water also harm the land. Mining sometimes leaves the soil contaminated with dangerous chemicals. Pesticides and fertilizers from agricultural fields are blown by the wind. They can harm plants, animals, and sometimes people. Some fruits and vegetables absorb the pesticides that help them grow. When people consume the fruits and vegetables, the pesticides enter their bodies. Some pesticides can cause cancer and other diseases. A pesticide called DDT (dichlorodiphenyltrichloroethane) was once commonly used to kill insects, especially mosquitoes. In many parts of the world, mosquitoes carry a disease called malaria , which kills a million people every year. Swiss chemist Paul Hermann Muller was awarded the Nobel Prize for his understanding of how DDT can control insects and other pests. DDT is responsible for reducing malaria in places such as Taiwan and Sri Lanka. In 1962, American biologist Rachel Carson wrote a book called Silent Spring , which discussed the dangers of DDT. She argued that it could contribute to cancer in humans. She also explained how it was destroying bird eggs, which caused the number of bald eagles, brown pelicans, and ospreys to drop. In 1972, the United States banned the use of DDT. Many other countries also banned it. But DDT didn’t disappear entirely. Today, many governments support the use of DDT because it remains the most effective way to combat malaria. Trash is another form of land pollution. Around the world, paper, cans, glass jars, plastic products, and junked cars and appliances mar the landscape. Litter makes it difficult for plants and other producers in the food web to create nutrients . Animals can die if they mistakenly eat plastic. Garbage often contains dangerous pollutants such as oils, chemicals, and ink. These pollutants can leech into the soil and harm plants, animals, and people. Inefficient garbage collection systems contribute to land pollution. Often, the garbage is picked up and brought to a dump, or landfill . Garbage is buried in landfills. Sometimes, communities produce so much garbage that their landfills are filling up. They are running out of places to dump their trash. A massive landfill near Quezon City, Philippines, was the site of a land pollution tragedy in 2000. Hundreds of people lived on the slopes of the Quezon City landfill. These people made their living from recycling and selling items found in the landfill. However, the landfill was not secure. Heavy rains caused a trash landslide, killing 218 people. Sometimes, landfills are not completely sealed off from the land around them. Pollutants from the landfill leak into the earth in which they are buried. Plants that grow in the earth may be contaminated, and the herbivores that eat the plants also become contaminated. So do the predators that consume the herbivores. This process, where a chemical builds up in each level of the food web, is called bioaccumulation . Pollutants leaked from landfills also leak into local groundwater supplies. There, the aquatic food web (from microscopic algae to fish to predators such as sharks or eagles) can suffer from bioaccumulation of toxic chemicals. Some communities do not have adequate garbage collection systems, and trash lines the side of roads. In other places, garbage washes up on beaches. Kamilo Beach, in the U.S. state of Hawai'i, is littered with plastic bags and bottles carried in by the tide . The trash is dangerous to ocean life and reduces economic activity in the area. Tourism is Hawai'i’s largest industry . Polluted beaches discourage tourists from investing in the area’s hotels, restaurants, and recreational activities. Some cities incinerate , or burn, their garbage. Incinerating trash gets rid of it, but it can release dangerous heavy metals and chemicals into the air. So while trash incinerators can help with the problem of land pollution, they sometimes add to the problem of air pollution. Reducing Pollution Around the world, people and governments are making efforts to combat pollution. Recycling, for instance, is becoming more common. In recycling, trash is processed so its useful materials can be used again. Glass, aluminum cans, and many types of plastic can be melted and reused . Paper can be broken down and turned into new paper. Recycling reduces the amount of garbage that ends up in landfills, incinerators, and waterways. Austria and Switzerland have the highest recycling rates. These nations recycle between 50 and 60 percent of their garbage. The United States recycles about 30 percent of its garbage. Governments can combat pollution by passing laws that limit the amount and types of chemicals factories and agribusinesses are allowed to use. The smoke from coal-burning power plants can be filtered. People and businesses that illegally dump pollutants into the land, water, and air can be fined for millions of dollars. Some government programs, such as the Superfund program in the United States, can force polluters to clean up the sites they polluted. International agreements can also reduce pollution. The Kyoto Protocol , a United Nations agreement to limit the emission of greenhouse gases, has been signed by 191 countries. The United States, the world’s second-largest producer of greenhouse gases, did not sign the agreement. Other countries, such as China, the world’s largest producer of greenhouse gases, have not met their goals. Still, many gains have been made. In 1969, the Cuyahoga River, in the U.S. state of Ohio, was so clogged with oil and trash that it caught on fire. The fire helped spur the Clean Water Act of 1972. This law limited what pollutants could be released into water and set standards for how clean water should be. Today, the Cuyahoga River is much cleaner. Fish have returned to regions of the river where they once could not survive. But even as some rivers are becoming cleaner, others are becoming more polluted. As countries around the world become wealthier, some forms of pollution increase. Countries with growing economies usually need more power plants, which produce more pollutants. Reducing pollution requires environmental, political, and economic leadership. Developed nations must work to reduce and recycle their materials, while developing nations must work to strengthen their economies without destroying the environment. Developed and developing countries must work together toward the common goal of protecting the environment for future use.

How Long Does It Last? Different materials decompose at different rates. How long does it take for these common types of trash to break down?

• Paper: 2-4 weeks
• Orange peel: 6 months
• Milk carton: 5 years
• Plastic bag: 15 years
• Tin can: 100 years
• Plastic bottle: 450 years
• Glass bottle: 500 years
• Styrofoam: Never

Indoor Air Pollution The air inside your house can be polluted. Air and carpet cleaners, insect sprays, and cigarettes are all sources of indoor air pollution.

Light Pollution Light pollution is the excess amount of light in the night sky. Light pollution, also called photopollution, is almost always found in urban areas. Light pollution can disrupt ecosystems by confusing the distinction between night and day. Nocturnal animals, those that are active at night, may venture out during the day, while diurnal animals, which are active during daylight hours, may remain active well into the night. Feeding and sleep patterns may be confused. Light pollution also indicates an excess use of energy. The dark-sky movement is a campaign by people to reduce light pollution. This would reduce energy use, allow ecosystems to function more normally, and allow scientists and stargazers to observe the atmosphere.

Noise Pollution Noise pollution is the constant presence of loud, disruptive noises in an area. Usually, noise pollution is caused by construction or nearby transportation facilities, such as airports. Noise pollution is unpleasant, and can be dangerous. Some songbirds, such as robins, are unable to communicate or find food in the presence of heavy noise pollution. The sound waves produced by some noise pollutants can disrupt the sonar used by marine animals to communicate or locate food.

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Related Resources

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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• 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.

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4 Causes and Effects of Air Pollution

Air pollution refers to the release of pollutants into the air, which can be harmful and impose significant health risks to the population, including increased chances of coronary and respiratory diseases, as well as preliminary deaths. Made up of chemicals and pollutant particles, air pollution is one of the biggest environmental problems of our lifetime . Read on to learn about the major causes and effects of air pollution. 

Sources of Air Pollution

1. burning fossil fuels.

The biggest contributors of air pollution are from industry sources and power plants to generate power, as well as fossil fuel motor vehicles. The continuous burning of fossil fuels releases air pollutants, emissions and chemicals into the air and atmosphere. 

In 2020, the Environmental Protection Agency reported that about 68 million tons of air pollution were emitted into the atmosphere in the US, contributing to the “formation of ozone and particles, the deposition of acids, and visibility impairment.”

The World Health Organization (WHO) estimates around 91% of the world’s population lives in places where air quality levels exceed limits. Developing and low-income countries experienced the greatest impacts from outdoor air pollution, particularly in the Western Pacific and South-East Asia regions. 

Climate change has an interrelated relationship with the environment and air pollution. As more air pollutants and greenhouse gases are released, this alters the energy balance between the atmosphere and the Earth’s surface , which leads to global warming. The global temperature increase in turns raises the production of allergenic air pollutants such as mold and extends pollen seasons. 

2. Ozone and Smog

Ozone is a gas that when it forms air pollution and reaches too close to the ground, it significantly reduces visibility. We call this smog. This form of air pollution occurs when sunlight reacts with nitrogen oxides released from car exhausts and coal power plants. The ozone typically forms a protective layer in the atmosphere to protect the population from ultraviolet radiation (UV), but as it transforms into smog, it is harmful to human health and poses higher risks of respiratory illnesses like asthma and lung cancer. 

3. Weather Conditions

Air pollution and poor air quality can be attributed to changing weather conditions. For example, dust storms in China would carry clouds of industrial pollutants and particulate pollution across the Gobi desert into neighbouring countries such as Korea and Japan during spring season. Likewise during periods of high air pressure, air becomes stagnant and pollutants are more concentrated over certain areas. 

4. Heatwaves and Wildfires

Heatwaves not only lead to an increase of temperature, but are some of the causes and effects of air pollution. Hotter, stagnant air during a heat wave increases the concentration of particle pollutants. Extreme heat wave events also have higher risks of large-scale wildfires, which in turn, releases more carbon emissions, smog and pollutants into the air. 

You might also like: 15 Most Polluted Cities in the World

Effects of Air Pollution 

Air pollution contributes to the death of 5 million every year and about 6% of the global population, according to Our World in Data . The lethal combination of outdoor air pollution and toxic emissions from burning fossil fuel has been one of the leading causes of chronic and often terminal health issues including heart disease, stroke, lung cancer, and lower respiratory infections. 

The WHO estimates that nine out of 10 people breathe air that contains high levels of pollutants. In 2017, close to 15% of population deaths in low income countries like South and East Asia are attributed to air pollution, while the higher income countries experience only about 2%. 

The drastic difference in mortality numbers can be linked to legislations such as the Clean Air Act implemented by high-income countries like the US. Such legislations usually establishes national air quality standards and regulations on hazardous air pollutants. The UK in particular, saw a sharp 60% decline in air pollutant emissions between the 1970 and 2016. 

The environmental effects of air pollution are also vast, ranging from acid rain to contributing to birth defects, reproductive failure, and diseases in wildlife animals. Agriculture is also a victim of air pollution as increased pollutants can affect crop and forest yields, reduce growth  and increased plant susceptibility to disease from increased UV radiation caused by ozone depletion.

In the wake of the COVID-19 pandemic, air pollution has once again returned to the spotlight in relation to its role in transmitting virus molecules. Preliminary studies have identified a positive correlation between COVID-19-related mortalities and air pollution. China, being one of the most polluted countries in the world, can potentially link its high death toll during the pandemic to its poor air quality. Although, more research needs to be conducted to make any substantive correlation.

You might also like: History of Air Pollution: Have We Reached the Point of No Return?

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Pollution - Cause and Effect Essay

Pollution is the contamination of the environment by synthetic substances or energy that has adverse effects on living or non-living matter. It occurs when pollutants contaminate the natural surroundings, which brings about changes that affect our normal lifestyles adversely. Pollutants are the key components of pollution, which are generally waste materials of different forms. Environmental pollution is one of the biggest menaces the world faces today. The contamination of the environment is being linked to some of the diseases that are around currently. This shows that environmental pollution is becoming an increasingly worse problem that needs to be taken care of as soon as possible. Without the cooperation of all global citizens, this issue is impossible to be solved. Although there are quite amount of people that care about the level of pollution our earth is facing, there are still too much people ignoring this issue and some even continue doing activities that produce even more pollution to the surroundings intentionally or unintentionally. Pollution levels need to be controlled all the time if we want to ensure our mother Earth is still a suitable living place for our offspring. As the saying goes, precaution is better than cure. If we fail to restore the ecological balance right now, it would be too late tomorrow. Then what should we do now? There surely cannot be any radical solution for the existing factories because it cannot be bodily lifted to a place far from the populated zone. The Government can at least see that future factories are set up at a distant place, an industrial complex far away from the township. Discharge of factory wastes in rivers should be banned to make it free from pollution. Researcher should find out how to avoid harmful smoke from factories and running vehicles. Deforestation should be stopped and forestry should be developed. Experts admit that pollution effects are quite often underestimated and that more research is needed to understand the connections between pollution and its effects on all life forms. We know that pollution causes not only physical disabilities but also psychological and behavioral disorders in people. Different types of pollution are categorized based on the part of the environment. Each of these types has its own distinctive causes and consequences. This contamination of air, water, or soil material interferes with human health and the functioning of ecosystem. Air pollution is by far one of the most widespread forms of pollution and thus, its effects are quite severe. It occurs when any harmful gases, dust, smoke enters into the atmosphere and makes it difficult for plants, animals and humans to survive as the air becomes dirty. While the health hazards of air pollution range from viral infection to life-threatening conditions, the same is also known to affect the environment by fueling global warming, acid rain, smog, etc. Water they say is life, and indeed, they were right. It is an important element in both domestic as well as industrial purposes. However, our water resources today give us a rude

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Prof.Dr.Suaad AL-Taai

Pollution and its direct and indirect negative effects on humans, and animals is one of the most important issues that researchers have been studying and searching for radical solutions. Therefore, the research sheds light on the definition of pollution, its causes and environmental effects, its most important types, especially radioactive, industrial and household waste, and their levels of risk. The research focuses on the issue of air pollution resulting from fumes, smoke, and gases emitted from cars, factories, volcanic eruptions, and others. It also absorbs the problem of soil and water pollution due to the failure to properly treat factory, household and other waste, and the use of chemical fertilizers and pesticides harmful to water, air and soil. The research addresses the topic of noise pollution, and its causes by limiting loud noises from radio, television, cars, airplanes, music, etc.

B Suresh Lal, PhD

Since the dawn of the Industrial age there has been slow accretion of wastes on the planet. These wastes are the by products in the production of Industrial goods. In contrast to natural processes where everything gets transformed into some form or other within a certain period, these Industrial wastes left over have accumulated in the atmosphere, on the earth and in water bodies. According to field study data focused that, public health steadily declined due to consumption of water polluted by effluents. Residents of the village suffer from epilepsy, respiratory diseases, skin and throat problem, glaucoma, paraplegia, jaundice, typhoid, diarrhea, joint pains and cancer. Women and children are the most affected. In some cases even the pregnancy is affected. Also the total land became barren/ damaged is 266 acres belonging to 177 farmers, along with agricultural equipment loss. Nearly 100 families were lost their occupation i.e. toddy tapping, about 322 animals were died of consumption of polluted water. Industrialization, contrary to belief, has resulted in unemployment. Pollution has displaced several traditional families and professions. Thus, industrialization had deprived the rural people of the drinking water facilities which they were having earlier and it had also caused a change in the source of irrigation as most of them who were depending on tanks and steam water for irrigation.

The importance of the environmental pollution lies in its great impact on human life and the surrounding environment. In addition to its disastrous results that extend for many years, it contributes to crystallize the life of man, animal, and plant. The research discusses the concept of environmental pollution, and all the undesirable changes that occur in the environment. It sheds light on the causes of pollution, especially radiation and chemical types result from cars, fumes, gases, smoke and industrial wastes, which included liquid, solid wastes and others. It emphasizes air pollution, its causes, sources, and effects on humans, animals, plants, and the weather. It has a major role in making a foremost change in temperatures degree. Conceivably, the waste is extremely dangerous, and the smoke, fumes, toxins and unpleasant odors of factories and cars cause a fuel combustion with all its preventive measures and procedures. There is no doubt that the expansion of transportation means will negatively affect the percentage of environmental pollution. The research debates the most important factors and causes of water pollution due to throwing liquid and solid wastes into rivers and lakes. The causes of soil and plant pollution can be linked to the use of large quantities of pesticides and chemical fertilizers, which affect the quality of agricultural crops and reduces their fertility. They contribute to the loss of their beneficial organic materials, which harmfully disturbs the life of both humans and animals.

QUEST JOURNALS

Developmental activities such as construction, transportation and manufacturing not only deplete the natural resources but also produce large amount of wastes that leads to pollution of air, water, soil, and oceans, global warming and acid rains. Untreated or improperly treated waste is a major cause of pollution of rivers and environmental degradation causing ill health and loss of crop productivity. In this research paper a study is undertaken about the major causes of pollution, their effects on our environment and the various measures that can be taken to control such pollutions

Alexander Decker

isara solutions

Interal Res journa Managt Sci Tech

It has been a remarkable increase in knowledge about different kinds of pollution and health of human. The objective of this article is to analyze the effects of different types of pollution on health of human through a review of various studies. It has been reported in many studies that atmospheric pollution has detrimental impacts on health, mainly focus on respiratory and cardiovascular outcomes. Drinking of potentially toxic elements (PTEs) contaminated water produces various water-borne diseases and also irrigation with this water affect the crop quality, which ultimately affects human health. Heavy metals and other pollutants present in soil cause toxicity of agricultural production and have a negative effect on human health. Noise pollution may results sleep disturbance and annoyance. Further studies should broaden the analysis to social and psychological aspects that influenced by pollution.

The earth is a victim of on slaughter of a materialistic civilization and industrialization. As a result there is rapid depletion of natural resources. Life on the earth being posed to severe threats, nature has started sending us warning signals in the form of droughts, floods, tsunamis, vast changes in climatic patterns, global warming, acid rains, sprawling desertification, depletion of atmospheric ozone shield and many hitherto unheard diseases.1 In the last 100 years mankind managed top destroy much of what took nature millions of years to create on the earth. At no point of time in the history of our planet has so much damage been done. Mankind has poisoned the river systems through out the world and this, in turn, has upset the ecological balance of the rivers and oceans. Trees are indiscriminately being chopped down because of the greed of man

Publisher ijmra.us UGC Approved

Environmental pollution is a global challenge that influences human health. However, in developing countries and in countries in transition, environmental pollution levels are still at relatively high levels, though the levels have been gradually decreasing or have remained stable during rapid economic development.. This reviewprovides the insight view about the effects and remedies of environmental pollution in the perspective of air pollution, water and land/soil waste pollution on human by diseases and problems, animals and trees/ plants.

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Essay on Air Pollution for Students and Children

500+ words essay on air pollution.

Essay on Air Pollution – Earlier the air we breathe in use to be pure and fresh. But, due to increasing industrialization and concentration of poisonous gases in the environment the air is getting more and more toxic day by day. Also, these gases are the cause of many respiratory and other diseases . Moreover, the rapidly increasing human activities like the burning of fossil fuels, deforestation is the major cause of air pollution.

How Air Gets Polluted?

The fossil fuel , firewood, and other things that we burn produce oxides of carbons which got released into the atmosphere. Earlier there happens to be a large number of trees which can easily filter the air we breathe in. But with the increase in demand for land, the people started cutting down of trees which caused deforestation. That ultimately reduced the filtering capacity of the tree.

Moreover, during the last few decades, the numbers of fossil fuel burning vehicle increased rapidly which increased the number of pollutants in the air .

Causes Of Air Pollution

Its causes include burning of fossil fuel and firewood, smoke released from factories , volcanic eruptions, forest fires, bombardment, asteroids, CFCs (Chlorofluorocarbons), carbon oxides and many more.

Besides, there are some other air pollutants like industrial waste, agricultural waste, power plants, thermal nuclear plants, etc.

Greenhouse Effect

The greenhouse effect is also the cause of air pollution because air pollution produces the gases that greenhouse involves. Besides, it increases the temperature of earth surface so much that the polar caps are melting and most of the UV rays are easily penetrating the surface of the earth.

Get the huge list of more than 500 Essay Topics and Ideas

Effects Of Air Pollution On Health

Moreover, it increases the rate of aging of lungs, decreases lungs function, damage cells in the respiratory system.

Ways To Reduce Air Pollution

Although the level of air pollution has reached a critical point. But, there are still ways by which we can reduce the number of air pollutants from the air.

Reforestation- The quality of air can be improved by planting more and more trees as they clean and filter the air.

Policy for industries- Strict policy for industries related to the filter of gases should be introduced in the countries. So, we can minimize the toxins released from factories.

Use of eco-friendly fuel-  We have to adopt the usage of Eco-friendly fuels such as LPG (Liquefied Petroleum Gas), CNG (Compressed Natural Gas), bio-gas, and other eco-friendly fuels. So, we can reduce the amount of harmful toxic gases.

To sum it up, we can say that the air we breathe is getting more and more polluted day by day. The biggest contribution to the increase in air pollution is of fossil fuels which produce nitric and sulphuric oxides. But, humans have taken this problem seriously and are devotedly working to eradicate the problem that they have created.

Above all, many initiatives like plant trees, use of eco-friendly fuel are promoted worldwide.

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Home — Essay Samples — Environment — Water Pollution — Water Pollution: Causes, Consequences, Solutions

Water Pollution: Causes, Consequences, Solutions

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India’s Silicon Valley Faces a Water Crisis That Software Cannot Solve

Bengaluru gets plenty of rain. But the city did not properly adapt as its soaring population strained traditional water sources.

Filling up with subsidized water at a government distribution center in the Indian city of Bengaluru, also known as Bangalore. Credit...

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By Damien Cave

Photographs by Atul Loke

Reporting from Bengaluru, India

• March 31, 2024 Updated 2:12 a.m. ET

The water tankers seeking to fill their bellies bounced past the dry lakes of India’s booming technology capital. Their bleary-eyed drivers waited in line to suck what they could from wells dug a mile deep into dusty lots between app offices and apartment towers named for bougainvillea — all built before sewage and water lines could reach them.

At one well, where neighbors lamented the loss of a mango grove, a handwritten logbook listed the water runs of a crisis: 3:15 and 4:10 one morning; 12:58, 2:27 and 3:29 the next.

“I get 50 calls a day,” said Prakash Chudegowda, a tanker driver in south Bengaluru, also known as Bangalore, as he connected a hose to the well. “I can only get to 15.”

The Silicon Valley of South Asia has a nature issue — a pain point that software cannot solve. In the sprawl beyond Bengaluru’s core, where dreams of tech riches usually grow, schools lack water to flush toilets. Washing machines have gone quiet. Showers are being postponed, and children with only dirty water to drink are being hospitalized with typhoid fever.

The big problem afflicting Bengaluru is not a lack of rain (it gets plenty, about as much as Seattle), but rather what often holds this giant, energetic nation back: arthritic governance. As the city rushed toward the digital future, tripling its population to 15 million since the 1990s and building a lively tech ecosystem, water management fell behind and never caught up as otherwise healthy aquifers were drawn dry by the unchecked spread of urban bore wells.

Failures of environmental stewardship are common across a country with severe pollution and an acute need for economic growth to provide for 1.4 billion people, spanning political parties and India’s north-south divide . But Bengaluru’s water struggle is especially withering for many — and motivating for some who have water sales or reform in mind — because the city sees itself as an innovator. And in this case, the causes and solutions are well known.

“There is no crisis of water availability,” said Vishwanath Srikantaiah, a water researcher and urban planner in Bengaluru. “It’s a clear-cut crisis of state failure.”

Viewed another way, he added in an interview at his home, where books about water and rivers were stacked nearly to the ceiling, it is a crisis caused by a lack of imagination.

As public policy experts tell it, Bengaluru and the broader state of Karnataka have been too slow to plan for growth, too divided across agencies and too rigid in their reliance on pumping water uphill from reservoirs along the Kaveri River more than 50 miles away.

Despite a long history of local hydrology — Nadaprabhu Kempegowda, the 16th-century founder of Bengaluru, built hundreds of cascading lakes for irrigation — officials have mostly stuck with the traditional engineering option that their predecessors turned to in the 1950s and ’60s.

That is the case despite its challenges and expense. The energy cost alone for pumping eats up 75 percent of the Bangalore Water Supply and Sewerage Board’s revenue, while supplying only around half of what the city needs.

The rest, for decades, has come from bore wells — holes about six inches wide that act like straws for water from aquifers below. An authority separate from the water board has punched 14,000 of them into the ground, half of which are now dry, according to officials. Experts estimate that residents have drilled another 450,000 to 500,000 into the cityscape, without the government knowing where or having a clear sense of their impact.

In much of the city, the wells are like doorbells, plentiful but seemingly invisible until someone points them out. Drilling failures appear as cutout circles on quieter streets; successes are often covered in flowers, with a black hose snaking into a home down the street.

Spending a day in the cab of Mr. Chudegowda’s tanker truck offered a glimpse of how the ad hoc system works. At one stop, drivers wrote their times in a logbook while cameras watched how much they took. At another the supply was slow and organized: A half-dozen drivers took 20-minute turns for fill-ups of around 6,000 liters, or about 1,600 gallons, just a few steps from a lake depleted to a puddle. At a third, a building owner sold a load to Mr. Chudegowda without the wait.

“Every minute counts,” he said as he climbed out of the truck.

His customers ranged from a bra factory with 100 workers to a small apartment building, all within a few miles to maximize profit. He charged each up to 1,500 rupees ($18) for each tanker load, more than double the going rate from a few months ago, which he considered justified because costs had gone up.

Drills — easily hired from companies with storefronts across the city — often fail to find water or have to go deeper now, which means more electricity and gas for the pumps pulling precious liquid from the earth.

The effects, while not at “Dune”-like levels, have become more visible in recent weeks, especially in the tech corridors, with their blur of luxury apartments, slums, mobile phone stores, malls, in vitro fertilization clinics and shimmering offices.

In Whitefield, a busy software hub, Sumedha Rao, a teacher at a new public school, offered to ask her class of 12-year-olds about their experiences with water scarcity. The hallways were painted in bright colors with words of encouragement — resilience, citizenship, collaboration. In class, they were asked how often they have water at home.

“One day a week, ma’am,” said a girl with pigtails.

“We just have a bucket,” said a boy near the back.

“There’s no water in the bore wells,” shouted another.

Many take small amounts of drinking water from school taps for their families — only one water bottle per child, because it is all the school can spare. Behind a play area the color and consistency of ground ginger sat a hulking pile of metal: a broken bore well.

“The motor stopped working,” said Shekar Venkataswamy, a physical education teacher with a brigand’s mustache.

Walking toward his home behind the school, he pointed to a dry hole where drilling failed, and one where it worked. A few thousand families take turns using the water for an hour each, with an elaborate schedule that is tightly managed.

Community leaders expressed pride in how they were handling the crisis, softening the blows of sacrifice. Many others have been inspired to broader action.

One morning, four tech workers who had become water activists showed up in a northern corner of the city where Mr. Srikantaiah, the water researcher, had worked with the local community to rejuvenate a once trash-strewn lake. A small network of gurgling filters and pipes sends out 200,000 liters of potable water per day.

“It will soon be 600,000,” Mr. Srikantaiah said. And the price per customer: nearly a third of what tanker drivers are charging.

The tech workers said they planned to share the details with neighbors and officials, to spread the word that a lake, using rainwater and lightly treated sewage, could be turned into a safe, affordable, reliable water source.

In an interview at his office, the chairman of the water board, Ram Prasath Manohara, 43, a seasoned government administrator installed three months ago, embraced the idea.

Acknowledging that some past officials had thought narrowly about water management, he said he hoped to attract public and private money for a more innovative approach, mixing data-driven methods that would revive lakes to let aquifers recharge and would expand rainwater harvesting and conservation.

“We’re going for a greener solution,” he said. “A more effective solution.”

So far, though, progress has been slow. He has not been able to hire any additional staff, he said, and he is working from 6 a.m. to 2 a.m. every day.

Short-term relief, he prays, will come in the next few weeks, with reservoir water extended to more parts of the city and the expected spring rains. Most of all, like many others in India’s Silicon Valley, he hopes all the public attention to water scarcity will add momentum for long-term change.

In one corner of his offices, a quote from Benjamin Franklin had been printed on a piece of paper and pasted to a window: “When the well is dry, we know the worth of water.”

“This crisis,” he said, rubbing his tired eyes, “it gives us an opportunity.”

Imran Khan Pathan contributed reporting.

Damien Cave is an international correspondent for The Times, covering the Indo-Pacific region. He is based in Sydney, Australia.  More about Damien Cave

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