This measure, based on data from the Environmental Protection Agency, evaluates states on the number of days the Air Quality Index in counties was not rated “good.” U.S. News calculated a ...

Urban air pollution represents one of modern life’s most unavoidable toxin exposures. Even with increasing awareness and improving standards in some cities, the reality remains that urban ...

Air pollution in Los Angeles from cars and human ... an important consideration as more cities pursue urban greening programmes. “The vegetation matters,” she says. Receive a weekly dose ...