A man crosses Broad Street past a hazy City Hall, June 7, 2023, in Philadelphia. Thick, smoky air from Canadian wildfires made for days of misery in New York City and across the U.S. Northeast this week. But for much of the rest of the world, breathing dangerously polluted air is an inescapable fact of life — and death. (AP Photo/Matt Slocum, File)
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