US Air Quality Is Slipping after Years of Improvement

While it remains unclear whether this is the beginning of a trend, health experts say it's troubling to see air quality progress stagnate.

  • Published 18 June 2019

After decades of improvement, America's air may not be getting any cleaner. 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. There were 15% more days with unhealthy air in America both last year and the year before than there… Read at AP News