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.

Deep inside an abandoned mine in the Krusne hory (Ore Mountains) of northwest Czech Republic, Jakub Kristek's radiation meter crackles with urgency as he picks up a fist-sized rock. "Uranium ore," he ...

A former coal-mining hub in Canada has been exploring an unexpected pathway to clean energy by using the labyrinth of abandoned mine shafts beneath the village to deliver low-carbon geothermal heating ...