Inside the Carnegie Library in Braddock, Pennsylvania, Ron Ferchak explained what a hot strip mill does. Imagine an assembly line, three football fields long. You put in a steel slab on one 40 feet ...

U.S. Steel is investing big money to modernize a mill in the Pittsburgh area. Some are worried about continued air pollution from the plant, while others in the area are excited about its economic ...

A Texas-based energy company wants to expand a natural gas processing facility in western Pennsylvania that has had multiple environmental violations since opening in 2020. The Pennsylvania Department ...

A federal appeals court upheld a Biden-era air quality standard for soot. Allegheny County and other areas in PA could be out of compliance with the new standard.

Searching the shores of Lake Erie for beach glass is a favorite pastime. Here are the best beaches at Presque Isle to find it and some tips from a pro.

The passing of Pennsylvania’s new budget means that several bills to slow down data center development in the state are on hold, like repealing a key tax exemption.

The Monongahela River is a 130-mile waterway that begins in the mountains of West Virginia and ends in Pittsburgh, where its waters flow into the Ohio River. Over the course of that journey, the river ...

In the race to develop data centers to satiate the growing appetite for artificial intelligence, Washington County is hoping to be a contender. CNX — a natural gas company based in Washington County — ...

This story is part of our series, Wild Pennsylvania. Check out all of our stories here. A new study uses museum specimens to find out how the leaves of poison ivy in Pennsylvania have changed with the ...

This story is the fourth in a series examining the aftermath of the Feb. 3, 2023, Norfolk Southern train derailment in East Palestine, Ohio, funded in part by the Fund for Investigative Journalism. It ...

The Allegheny Health Department has fined U.S. Steel $2 million for violating state laws on hydrogen sulfide emissions at its Clairton plant. The county found the company’s Clairton coke works caused ...

As home gardeners are cleaning up their spring flower beds and vegetable patches, they might notice signs of a relatively new invasive species that’s made its way across Pennsylvania. Though Asian ...