Researchers that found that Pennsylvania counties with more farmland and herbicide use also have more melanoma, and not just among farmers.

Drilling for oil and gas creates waste that can contain heavy metals and radioactivity, and much of it is sent to the same ...

Pennsylvania has historically taken a “backseat” to addressing concerns about the Chesapeake Bay, but Gov. Shapiro said those ...

U.S. Steel has agreed to pay a fine and prevent oil from one of its plants from discharging into the Monongahela River near ...

A study looked at phosphorus levels in Pittsburgh streams before and after drinking water was treated with a chemical to ...