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There's something very old and relentless beneath a quiet Pennsylvania town. It's a coal fire that's burning. And it's still ...

Climate activists worry about the high-energy demand for bitcoin mining. A once-dormant power plant is humming with activity outside Pittsburgh as thousands of miners work 24 hours a day. The miners ...

Nearly 20 years after a mine fire ignited under Centralia, Pa., residents who still lived in the town had a dilemma on their hands: should they take a $25 million federal buyout or try to dig up part ...

At the Berkeley Pit, researchers hope to extract valuable metals to increase U.S. production of rare earths used in electric cars, medical advances and national defense. Ongoing extraction inside the ...