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

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

      

https://ift.tt/1roPe8M from USATODAY - News Top Stories https://ift.tt/34oGB1n
by Joshua Bote, USA TODAY November 02, 2019 at 04:03AM