In one of the most baffling discoveries of the last decade, scientists have found a clue in a cave to how life might survive ...

Paul Wilcox descends into Devil’s Canopy Cave on Prince of Wales Island. An unlikely discovery in a cave on Prince of Wales Island could help scientists understand Earth’s climate history. A small ...

The investigative minds at How to Survive examine the deepest cave on Earth, environmental hazards, and survival ...

Why it's incredible: The cave is so deep, the world's tallest building could fit inside it. The Hranice Abyss — or "Hranická propast," in Czech — is the deepest known freshwater cave in the world.