Report or Study:  Harder to Breathe: Air Quality Has Worsened Since 2016
Date:  2019
Peer Reviewed:  
Summary:  
In the U.S., annual average levels of fine particulate matter — PM2.5 — declined 24% from 2009 to 2016, then increased 5% between 2016 to 2018.
Topics:  Air Quality, Climate Change, Fracking / Gas Development, Public Health
Regions:  National
Keywords:  
Report or Study Link: https://www.nber.org/papers/w26381
Report or Study Link Title:  
Report or Study Link Target:  _blank
Article Link/URL: https://www.cmu.edu/news/stories/archives/2019/november/air-quality-worsens.html