A former coal-mining hub in Canada has been exploring an unexpected pathway to clean ...

Not all explorers are relegated to the pages of history books. One modern-day explorer is shedding light on some pretty dark places. Dan Lopez has spent the last 10 years exploring the dark abandoned ...

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 ...