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

With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the nation’s worst air quality. But officials face growing pushback about ...

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

In 1970, when a nearly unanimous Congress approved sweeping changes strengthening federal air pollution laws, one proviso ...

Aerosol paint makers will get additional time to comply with updated regulations limiting air emissions that trigger ozone ...

Proposal appears designed to weaken the federal government’s ability to regulate sources of the pollution driving climate change.

Wausau Pilot & Review Wildfire smoke, once a seasonal nuisance in the American West, is rapidly becoming a year-round public ...

The pilot project, planned between 4 and 11 July, will see a small aircraft release a mix of silver iodide, iodised salt and ...

A Fourth of July air quality alert was issued for central Indiana due to smog levels. Residents advised to limit outdoor ...