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How is Air Quality Measured?

Air pollutants come from a variety of sources, including human-caused emissions – like fossil fuel use in vehicles and cooking – and natural sources, such as dust storms and smoke from wildfires and volcanoes. Air quality monitors are outfitted with…

Five Cities Tackling Air Pollution

Air pollution has been called the most-pressing environmental health crisis of our time, responsible for an estimated 7 million premature deaths every year. Approximately nine in 10 people around the world breathe unclean air, which increases the risk of asthma,…

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