"This study updates how we understand [ozone] pollution." Researchers make stunning discovery that shatters previous ...

Officials cautioned that ozone formation is a complex process with many factors, saying they cannot be sure that the hot fall was the driving factor in October’s exceedances. “It is not ...

In densely populated coastal areas, reactions of polluted air with sea salt aerosol from the ocean can lead to high surface ozone levels that affect air quality. Chlorine has become infamous for ...