An Air Pollution Action Day was called Wednesday morning for the Chicago area and is in effect until midnight, weather ...

A gray haze from wildfire smoke could be seen in Cincinnati, and the entire state of Minnesota is under an air quality alert.

The Trump administration's Environmental Protection Agency is taking aim at dozens of rules aimed at protecting the ...

WASHINGTON (Reuters) -President Donald Trump's administration has proposed repealing rules passed under former President Joe ...

A World War II-era boiler in Virginia is at the center of a growing debate over the paper industry’s role in climate change — ...

Only 25 of New York’s 62 counties could be graded for at least one measure of air quality, according to the report. Putnam ...

Smoke from Canadian wildfires has carried another day of poor air quality south of the border to the American Midwest ...

California leaders said the state intends to challenge the move in court, and to find new ways to move drivers toward ...