In Western U.S., health risks from ground-level ozone and fine…
https://www.college.ucla.edu/wp-content/uploads/2022/01/Sunsetinsmoke-filledsky-363x237v2.png237363Lucy Berbeohttps://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.pngLucy Berbeo2022-01-24 13:17:182022-01-24 13:17:18Days with hazardous levels of air pollutants are more common due to increase in wildfires