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The original was posted on /r/science by /u/giuliomagnifico on 2024-10-17 15:39:26+00:00.

Original Title: Analyzing air monitoring data from New York City, researchers found significant improvements in air quality between 1998 and 2021. Thanks to climate policies, PM2.5 levels dropped by 37%, NO2 by 31%, and polycyclic aromatic hydrocarbons decreased by 66%