In 1970, when a nearly unanimous Congress approved sweeping changes strengthening federal air pollution laws, one proviso allowed California in many cases to craft its own rules — a recognition of ...

We typically spend 80% of our time indoors, where the quality of the air we breathe depends on the age and type of building ...

The most effective filters have what’s called high-efficiency particulate air certification. Better known as HEPA filters, ...

With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the ...

After months of backlash over alleged pollution concerns, xAI has finally secured an air permit covering some of the methane ...

This is Thailand's desperate, unproven attempt at reducing the oppressive air pollution over its capital, which on Thursday reached eight times the World Health Organization's recommended daily ...

Despite improvements in air quality in past decades, 156 million Americans still breathe in too much soot or ozone, says the annual State of the Air report from the American Lung Association.

Chicago also ranked poorly by another measure of air quality: particle pollution. The metro area ranked 19th in the nation for annual average pollution by fine particles.

Researchers determined how much outdoor particulate pollution affects indoor air quality. Their study concluded pollution from inversion and dust events is kept out of buildings, but wildfire ...

University of Utah researchers used their Salt Lake City campus as lab to determine how much outdoor particulate pollution affects indoor air quality. Their study concluded pollution from ...