Recent data from the Environmental Protection Agency shows air quality in certain regions of the U.S. is deteriorating, ...

An air quality alert was issued on Sunday at 10:33 a.m. in effect until Tuesday at midnight. The alert is for Calabasas and ...

Joe Edwards is a Live News Reporter based in Newsweek's London Bureau. He covers U.S. and global news and has a particular interest in U.S. and U.K. politics and social policies. Joe joined ...

Major air pollutants have declined in recent decades, but USA TODAY’s analysis shows wildfire smoke is taking their place.

California has to shift to zero-emissions trucks and trains in the coming years. Diesel is one of the most dangerous kinds of air pollution for human health, and California’s diesel problem is ...