Gas-powered cars and diesel trucks remain the state’s largest sources of smog and soot despite decades of cutting emissions.

As Los Angeles grew exponentially in the mid-1900s and the car became the apple of capitalism's eye, the smog arose and ...

Prepare for soaring temperatures near 100° and smoky air. Avoid the outdoors during peak heat hours for better air quality ...

University of Utah researchers believe inflammation starts a months-long process that increases risk of aneurysm rupture.

The warming trend that will hit Southern California on Tuesday is bringing with it some adverse air quality. The South Coast ...

With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the ...

So happy smogiversary, Los Angeles. We can breathe a lot easier than we used to, but don't let that fool you — we still have the worst air quality in America — a distinction the American Lung ...

Continued exposure to fine particulate matter is linked to higher levels of diffuse myocardial fibrosis, according to a study ...

Photos of the Vietnamese capital, home to almost 9 million people, show the environmental cost of the Southeast Asian ...