United States

These Are America’s 10 Most Polluted Cities

By Justin Worland Here are the U.S. cities with the most ozone pollution in 2015: California is well-represented on the list & in the article. 1. Los Angeles-Long Beach, CA 2. Visalia-Porterville-Hanford, CA 3. Bakersfield, CA 4. Fresno-Madera, CA 5…. Read More ›