The rule for mercury emissions from coal-fired power plants will be rolled back to a 2012 standard. Mercury is a neurotoxin.

How last year's fatal blast at the Clairton Coke Works has impacted the community there. A new study shows how many deaths ...

Six months after two deaths at the massive Clairton Coke Works, U.S. Steel’s new owner inherits the plant’s safety challenges and pollution violations. Nippon’s plans haven’t yet been released.

Even though the region’s air has started to come into compliance with federal clean air standards, it still ranks among the ...

High levels of toxic 'forever chemicals' in the airport’s stormwater are being discharged into tributaries of Montour Run, a ...

Driven by the growth of data centers for artificial intelligence,, and electricity prices are surging. In Pennsylvania, some consumers are seeing double-digit price hikes. At the same time, President ...

Is January too early to think about spring flowers blooming? According to a new scientific paper, we aren’t waiting as long for those first native wildflowers to bloom in Pennsylvania thanks to ...

Meta says it has reached a deal to purchase power from the Beaver Valley nuclear plant in western Pennsylvania and two others in Ohio, as part of its efforts to power its artificial intelligence ...

How much toxic oil and gas waste is produced in Pennsylvania every year, and where does it end up? Despite state efforts to track it, there’s no way to know for sure. That’s one of the takeaways from ...

This is part of a series tracking waste from the fracking industry. Off a back road in the hilly country south of Pittsburgh, a tributary to the Monongahela River runs through overgrown vegetation and ...

This is part of a series tracking waste from the fracking industry. When John Quigley became the secretary of the Pennsylvania Department of Environmental Protection in 2015, he knew that he would be ...