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Air pollution can occur naturally or be caused by human activities. [4] Air pollution causes around 7 or 8 million deaths each year. [5] [6] It is a significant risk factor for a number of pollution-related diseases, including heart disease, stroke, chronic obstructive pulmonary disease (COPD), asthma and lung cancer.
A 2020 paper reported that about half of air pollution and half of the resulting deaths are caused by emissions from outside a given state's boundaries, typically from prevailing winds moving west to east. [9] Regulation of air pollution is a shared responsibility between federal, state, and local governments.
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.
Fossil fuels contribute to climate change and can cause respiratory illness, produce cancer-causing particulate matter, contribute to smog and acid rain, and pollute waterways. Air pollution from ...
Air pollution has dropped significantly in the U.S. since the 1970s. However, wildfires have emerged as a growing threat – making it harder to clean up the air and protect people’s health. As ...
A new study says that air pollution — specifically, the kind caused by car exhaust — may be a significant cause of rising rates of autism in children.. Exposure to nitric oxide (NO)— which ...