PENNSYLVANIA, USA — Pennsylvania has a long history of anthracite coal mining. The result is that millions of buildings and homes are located above abandoned mines. Looking to see old mine maps? Penn ...

When an abandoned mineshaft beneath Interstate 80 in Morris County collapsed the morning after Christmas, closing the eastbound side of the highway for four days, everyone took notice. No vehicles ...

MADISON, Wis. -- Across the U.S. there's about 30 million acres of land that's been cultivated but abandoned since the 1980s. Researchers at the University of Wisconsin-Madison now know where they are ...

Solar panels, carbon storage and alternative fuel sources are all key elements of the U.S. transition to cleaner forms of energy, reducing the country's reliance on climate change-causing fossil fuels ...