Phys.org • 12/9/2025 • Last cited 12/14/2025

Chemical traces from the 2023 Canadian wildfires have been detected in Maryland months after the smoke had dissipated, according to Phys.org. The wildfires, which were the worst on record for Canada, caused significant air quality issues in the U.S. East Coast, leading to severe hazard alerts in the Washington, D.C. area.
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