As people return to the structures spared from Los Angeles wildfires, experts warn that they should be careful of the air ...

Southern California chokes under hazardous air as wildfires rage, leaving residents and pets struggling to breathe ...

Federal environmental regulators have proposed a new rule to slash carcinogenic air pollution from chemical plants prevalent ...

Republican-run states contend in a lawsuit that the agency's deadlines for the plans are arbitrary and capricious.

An Environmental Protection Agency action expected Wednesday will unfreeze $150 million in paused Fairbanks-area road ...

California has decided to abandon its phase out of diesel trucks and requiring cleaner locomotives because of the incoming ...

Both permits were long overdue when CDPHE’s Air Pollution Control Division submitted them to the EPA for approval. Under ...

From the time you get up in the morning until you go to bed at night, and even while you are asleep, the U.S. Environmental ...

Unlike typical wildfires, smoke from the L.A. fires — consisting of toxic materials from burned down homes, cars, and more — ...

Since the EPA first started regulating clean air in the 1970s, emissions of the most common air pollutants have dropped by almost 80%.  But around Houston, there's still a long way to go. Each year, ...

The rule could have prevented the government from considering important health research in setting pollution limits ... have ...