US air quality: Air more polluted since 2016, report finds - discu.eu

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After years of improvement, US air quality has gotten worse since 2016, report suggests https://www.usatoday.com/story/news/nation/2019/11/01/us-air-quality-worse-since-2016-after-years-improvements-report/2499356001/ 59 comments 2/11/2019 politics

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Recent Increases in Air Pollution: Evidence and Implications for Mortality | NBER https://www.nber.org/papers/w26381 55 comments

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