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International study finds air pollution leads to millions of hospital visits for asthma attacks worldwide

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They estimated that 9–23 million and 5–10 million annual asthma emergency room visits globally in 2015 could be attributable to ozone and PM 2.5 , respectively, representing 8–20% and 4–9% of the annual number of global visits, respectively. Resources.

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Satellite method provides insight into ozone-NOx-VOCs sensitivity for different locations

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Both are represented in the study by a major gas of each type, the VOC formaldehyde and NO 2 , that are measureable from space by the Dutch-Finnish Ozone Monitoring Instrument aboard NASA’s Aura satellite, launched in 2004. Credits: NASA’s Earth Observatory /Josh Stevens. Click to enlarge.

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