The NWS has issued warnings as smog levels spike in the U.S. Southwest this weekend—here’s where air quality is turning unhealthy.

Smog warnings issued: The National Weather Service has issued air quality alerts for Southern California's Imperial Valley and Arizona's Phoenix metro area due to unhealthy ozone levels. Sewage crisis ...

In “Smog and Sunshine,” UCLA’s Ann Carlson tells of the scientists, lawyers, government officials and community members ...

Ann Carlson, a UCLA law professor who served as acting administrator of the National Highway Traffic Safety Administration ...

SMOG checks or emission tests exist due to the U.S. Environmental Protection Agency's (EPA) regulation on passenger vehicles. Each state sets limits of nitrogen oxides (NOx) from emitting past certain ...

Picture it: July 8, 1943, Los Angeles, California. You go outside and are inundated by a mysterious brown haze in the air that smells gaseous. This is unprecedented, and nobody knows what could be ...

This is read by an automated voice. Please report any issues or inconsistencies here. Even if you weren’t around Los Angeles in 1992, you’ve heard of Rodney King, the man whose videotaped beating at ...

When it comes to lung-damaging smog, Chicago and the rest of Cook County are the nation’s worst neighbors. Newly released data from the U.S. Environmental Protection Agency show air pollution from the ...

Authorities in Lahore have launched an intensified enforcement campaign to tackle rising smog levels, introducing stricter ...