Wildfires have worsened ozone levels across the United States so much over the last decade that they have reversed around four years of progress, a new study has found.  Surface ozone levels, or smog concentrations, steadily increased from 2015 to 2024, deteriorating air quality across the Midwest and Western U.S., researchers at the University of … Continue reading Wildfires Are Reversing Years of US Air Quality Gains, Study Finds