Republican David McCormick cut into Democratic Sen. Bob Casey's support in Philadelphia and its populous suburbs and built ...

Pennsylvania Department of Conservation and Natural Resources, the Western Pennsylvania Conservancy Natural Heritage Program, ...

Deluzio’s reelection to a second term representing the district that includes parts of blue Allegheny and red Beaver counties ...

A massive push for hydrogen energy is one of the first test cases of new federal environmental justice initiatives. Communities and advocates give the feds a failing grade.

Gas prices are dropping in western Pennsylvania. According to AAA, gas prices are 5 cents lower than they were last week. The ...

A visit to an ASHRAE event 30-plus years ago introduced David Heckler to VRF technology, and the distributor was won over.

Which local buildings have the best design? The American Institute of Architects honored the best at this year's Design Pittsburgh awards.

After the Supreme Court sided with the federal government in the Texas v. New Mexico water case, the parties are going back ...

Warm weather and heavy rains led to the Great Northeastern Flood of 1936 and it took years for the region to recover.

Pick one word to describe Republicans and Donald Trump, the focus group moderator asked, and one word to describe Democrats and Kamala Harris.

Firefighters in western Pennsylvania are urging residents to avoid burning outdoors due to an elevated risk of brush fires. A ...