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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.
Ozone from air with high oxygen level, catalysed by nitrogen oxides Soot and particulate from exhausts and industry Greenhouse effect by keeping sun warmth and light from reflecting back into space
Looking down from the Hollywood Hills, with Griffith Observatory on the hill in the foreground, air pollution is visible in downtown Los Angeles on a late afternoon.. Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems.
Soon after the EPA's founding, the agency dispatched 100 photographers to capture America's environmental problems in a photo project called Documerica.
The images show what various parts of the country looked like before the air and water protections that exist today.
TEMPO will measure pollutants such as “ozone, nitrogen dioxide, formaldehyde, aerosols, water vapor, and several trace gases,” according to NASA.
Delhi is the most polluted [56] city in the world and according to one estimate, air pollution causes the death of about 10,500 people in Delhi every year. [ 57 ] [ 58 ] [ 59 ] During 2013–14, peak levels of fine particulate matter (PM) in Delhi increased by about 44%, primarily due to high vehicular and industrial emissions, construction ...
This causes illness and deaths from air pollution, including nitrous oxides and particulates, and is a significant cause of climate change through emission of carbon dioxide. [3] [4] Within the transport sector, road transport is the largest contributor to climate change. [3]