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Map Shows States With Highest Levels of Tiny, Toxic Air Pollution
newsweek.com/air-pollution-pm1-submicron-usa-map-2085962
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California and Oregon are among the U.S. hotspots for dangerous submicron (PM1) air pollution—those with particles less than a micron, or a millionth of a meter wide—according to new research.
Researchers at Washington University of St.…
This story appeared on newsweek.com, 2025-06-16 16:06:56.