What are the most dangerous threats to our air quality? Particulate Matter and Ground-Level Ozone Continue to Plague American Skies Despite Progress

Dear EarthTalk: What are some of the more dangerous threats to our air quality and what can be done to eliminate them so we can all breathe more easily? — Melanie Smith, Pomfret, CT   The main threats to local air quality across the United States (as well as most everywhere else) remain smog and particulate pollution, […]