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› › › After years of improvement, US air quality has gotten worse since 2016, report suggests
After years of improvement, US air quality has gotten worse since 2016, report suggests

After years of improvement, US air quality has gotten worse since 2016, report suggests

By Friday, November 1, 2019 Comment Edit

Researchers identified three possible contributing factors: more wildfires, more economic growth and less enforcement of federal regulations.

      


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