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A new study shows how the smallest air pollutants (PM1) changed across the US from 1998 to 2022. These tiny particles fell over time, mostly thanks to cleaner fuel use – but still pose major healt... (www.thelancet.com)

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The original was posted on /r/science by /u/calliope_kekule on 2025-06-15 04:54:52+00:00.

Original Title: A new study shows how the smallest air pollutants (PM1) changed across the US from 1998 to 2022. These tiny particles fell over time, mostly thanks to cleaner fuel use – but still pose major health risks.

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