Particulate matter
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Particulate matter or particulates are microscopic particles of solid or liquid matter suspended in the air. The combination of particulates and air is called an aerosol. Sources of particulate matter
PM2.5 and PM10 compared with a human hair in a graphic from the Environmental Protection Agency
Excavator (a type of heavy equipment commonly used at construction sites and roadworks) demolishing the remnants of the pre-war Postal Train 0880Station (Dworzec Pocztowy) at Jerozolimskie Avenue, Poland
Horizon and layers of the atmosphere as seen from NASA Earth Observatory: troposphere (darkest), tropopause (brown), stratosphere (gray), mesosphere, thermosphere, and exosphere (blues). Colors are due to the dominant gases and particles in each layer.
Air pollution measurement station in Emden, Germany
Air pollution
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Air pollution is the presence of substances in the air that are harmful to humans, other living beings or the environment. Pollutants can be gases, like ozone or nitrogen oxides, or small particles li
Before flue-gas desulfurization was installed, the emissions from this power plant in New Mexico contained excessive amounts of sulfur dioxide.
Controlled burning of a field outside of Statesboro, Georgia, US, in preparation for spring planting.
E-waste processing in Agbogbloshie, Ghana, using open-burning of electronics to access valuable metals like copper.
Smoking fish over an open fire in Ghana, 2018.