The surrounding regions of New York City, Los Angeles and Philadelphia were ranked among the dirtiest major metropolitan areas in the country.

The EPA administrator might have provided a road map to revoking the critical scientific finding in a rule that repeals the power plant climate regulation.

Nearly half of the people in the U.S. live in areas with unhealthy levels of air pollution — and Louisville is one of those ...

This city was the most polluted in the U.S. Now, it's a scenic destination for outdoor adventures, historical attractions, and art.

There are 25 million more people living with bad air than last year's report showed, according to air quality data from the ...

Activists and northwest Indiana residents are asking the Indiana to reduce water pollution coming from BP’s Whiting Refinery.

After days of unseasonably high temperatures and low humidity, relentless wildfires have continued to rapidly grow across parts of northeastern Minnesota north of Lake Superior, destroying dozens of ...