Hosted on MSN1h
Scientists Worry About Urban Ash And The Impacts From Its Toxins Long After California WildfiresUrban ash from the California wildfires that has settled across the state has now been found more than 100 miles offshore.
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NASA Shares Worrying Images Of US East Coast Engulfed By Smoke From Canadian WildfiresThe air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.
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