Smoke from massive Canadian wildfires has been blowing thousands of miles across the U.S., blotting out the sun and shrouding many cities in a cough-inducing haze.As the smoke drifts with the wind, it also creates a new hazard along the way that is greater than the sum of its parts: a troubling ozone cocktail that results from a chemical reaction between wildfire smoke components and urban air pollution.
#people #los-angeles #climate-change #improvement #temporarily #recent-days #fossil-fuels #air-quality #older-adults #environmental-protection-agency
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