We have set official limits on air pollution and water pollution. (sciencedaily.com)
Fortunately, research shows that when gas prices climb, car buyers tend to opt for smaller rides, which in turn has a positive impact on air pollution. (creditdonkey.com)
Doing the study this way, the scientists were able to match death rates with local data on both air pollution and heat. (sciencenewsforstudents.org)