Yunta and the outback that surrounds it was once dotted with small, short‑lived gold mining operations, many dating back to ...

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 ...

In central Idaho, the Triumph Mine produced silver, lead, and zinc from the late 1800s into the 1950s. But since shuttering operations decades ago, the mine has been an environmental hazard, with ...