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Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. [ 1] It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological ...
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 ...
In 2010, the year of the WHO survey, the average PM 10 level in Delhi was 286 μg/m 3. In 2013, the PM 2.5 level was 153 μg/m 3. These levels are considered very unhealthy. In Gwalior, the city with the worst air quality in India, the PM 10 and PM 2.5 levels were 329 μg/m 3 and 144 μg/m 3 respectively.
Breathing polluted air can cause mood swings and changes, as well as increase the risk of long-term mental health impacts, according to a new study led by a team at Stanford University. Their ...
Anthropogenic air pollution has affected the United States since the beginning of the Industrial Revolution. [2] According to a 2024 report: "39% of people living in America—131.2 million people—still live in places with failing grades for unhealthy levels of ozone or particle pollution."
Air pollution in India. Dust & Construction contribute about 59% to the air pollution in India, which is followed by Waste Burning. Crafting activities are mostly in the urban areas while Waste Burning is in the rural areas (agriculture). Air pollution in India is a serious environmental issue. [ 1]
Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog [ 1] to refer to smoky fog due to its opacity, and odor. [ 2] The word was then intended to refer to what was sometimes known as pea soup fog, a familiar and serious problem in London from ...
e. The history of environmental pollution traces human-dominated ecological systems from the earliest civilizations to the present day. [1] This history is characterized by the increased regional success of a particular society, followed by crises that were either resolved, producing sustainability, or not, leading to decline.