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With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the ...

Glide over the sprawling city of Delhi, with this eye-opening drone footage, revealing the dense smog and air pollution that ...

Air quality monitors reveal the eight U.S. cities with the dirtiest air, where pollution from vehicles, industry, and geography combine to create dangerous smog and health hazards for residents. [air ...

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

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

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 ...

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

India's capital banned fuel sales to ageing vehicles on Tuesday as authorities try to tackle the sprawling megacity's ...

Exposure to air pollution can shorten people’s lives by 1.8 years - ‘just behind some of the leading causes of death and disease worldwide’, the authors warn ...