Beneath parts of the Appalachian Mountains, thousands of mine shafts still descend deep into the earth. Some of these vertical passages drop more than 1,000 feet, connecting long corridors carved ...

SCRANTON, Pa. — Coal mining is synonymous with Pennsylvania's history. While it's not as big as it once was, abandoned sites still linger across the region. Inviting explorers and thrill seekers into ...

From Europe to North America, an energy revolution is breathing new life into empty, long-forgotten coal mine shafts—by repurposing them into places to store renewable energy. Using "gravity batteries ...

Cumberland is testing whether its abandoned coal mines can become a town-wide geothermal network that supports redevelopment, economic growth, and lower emissions.

From a gold mine hidden deep within the Superstition Mountains to a wailing widow, Arizona has its fair share of spooky hiking trails. A trail you've probably never heard of is the Clay Mine Trail at ...

In previous articles, we have discussed (i) geothermal energy (heat from within the earth) as another source of renewable energy for heating and cooling of buildings, but whose use has been virtually ...

New Mexico's Environment Department plans to finish cleaning up at least one abandoned uranium mine by next summer, and has begun site evaluations at 15 uranium mine and mill sites in the northwest ...