Lee Zeldin recognized Mexico's willingness to cooperate with the U.S. to clean up sewage in the Tijuana River, but had some ...

American Rivers ranks the Tijuana River No. 2 on its list of most endangered rivers. Advocates are urging the U.S. and Mexico ...

A new report on air quality across the U.S. offers a cloudy prognosis on the long-term health of about 156 million residents ...

A new report from the American Lung Association shows that Phoenix's ozone problem is worsening, while its particulate ...

Air pollution levels keep getting worse for more people in the US, according to a new report, and experts say the Trump ...

The American Lung Association has revealed that nearly half the U.S. population resided in areas with dangerous levels of air ...

Los Angeles is the city with the worst ozone pollution in the country, while Bakersfield is the metropolitan area most ...

but nearly half of Americans still live with unhealthy air pollution, a new report finds. The report comes as the Trump administration is considering rolling back some key air quality regulations.

Smog from wildfires sweeping the nation has left tens of millions more Americans to breathe toxic air even as man-made forms of pollution fall, according to a new study released Wednesday.