US air quality is slipping after years of improvement

Over the last two years the nation had more polluted air days than just a few years earlier, federal data shows. While it remains unclear whether this is the beginning of a trend, health experts say it's troubling to see air quality progress stagnate….

About 100,000 Americans each year die prematurely because of polluted air, studies show.

Published: BY SETH BORENSTEIN and NICKY FORSTER Associated Press, Jun 18, 2019

https://www.theindependent.com/news/national/us-air-quality-is-slipping-after-years-of-improvement/article_4cbdf512-244d-5892-bfa1-272d04fae79e.html