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Schematic drawing, causes and effects of air pollution: (1) greenhouse effect, (2) particulate contamination, (3) increased UV radiation, (4) acid rain, (5) increased ground-level ozone concentration, (6) increased levels of nitrogen oxides. An air pollutant is a material in the air that can have many effects on humans and the ecosystem. [73]
Various definitions of pollution exist, which may or may not recognize certain types, such as noise pollution or greenhouse gases.The United States Environmental Protection Administration defines pollution as "Any substances in water, soil, or air that degrade the natural quality of the environment, offend the senses of sight, taste, or smell, or cause a health hazard.
There is evidence that air pollution, particularly particulate air pollution, increases the risk of cardiovascular, including cerebrovascular, disease. These diseases are known to have adverse effects on cognitive function. There is likely to be a causal association between particulate air pollution and effects on cognitive function in older ...
Air pollution is associated with adverse health effects like respiratory and cardiovascular diseases, cancer, related illnesses, and even death. [35] The risk of air pollution is determined by the pollutant's hazard and the amount of exposure that affects a person. [36]
The Six Cities study was born in the wake of the 1970s energy crisis amid growing concerns that a squeeze on oil supply would lead to greater use of low-quality coal and, therefore, higher mortality from air pollution. [8] The harmful health effects of burning coal had already come to light following the 1952 Great London Smog (in the United ...
By reducing transport emissions globally, it is predicted that there will be significant positive effects on Earth's air quality, acid rain, smog, and climate change. [6] Health effects of transport include noise pollution and carbon monoxide emissions.
Household air pollution (HAP) is a significant form of indoor air pollution mostly relating to cooking and heating methods used in developing countries. [1] Since much of the cooking is carried out with biomass fuel , in the form of wood , charcoal , dung , and crop residue , in indoor environments that lack proper ventilation, millions of ...
The reports provide guidelines intending to give guidelines to reduce the health effects of air pollution. [ 2 ] The guidelines stipulate that PM 2.5 should not exceed 5 μg/m 3 annual mean, or 15 μg/m 3 24-hour mean; and that PM 10 should not exceed 15 μg/m 3 annual mean, or 45 μg/m 3 24-hour mean. [ 2 ]