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

The longest mapped network of caves in the world also contains one of the most implausible marine collections in North America. In Mammoth Cave, sharks and their kinsmen are preserved in layers of ...

Deep inside a massive cave plunging more than 500 feet below the surface, explorers made an unexpected discovery. Ancient ...

(via MinuteEarth) Krubera Cave, one of our planet’s deepest known caves, extends 2200 meters into the earth – that’s a depth of nearly six Empire State Buildings. Or at least, that's as far down as ...

I'm a severe claustrophobe. After getting trapped in a slide in my local McDonald's at five years old, I swore off all tight and dark spaces forever. So it's not entirely surprising that I couldn't ...

CEDAR FALLS, Iowa (KCRG) - A team of researchers at the University of Northern Iowa (UNI) is exploring some of the deepest caves in the country to learn more about life in extreme environments. The ...

Deep cave layers on Sulawesi preserve tools, bones, and art that may show modern humans overlapping with earlier hominins.

Evidence that modern humans and an older hominin species used the same cave, probably during overlapping periods, has been found during a deep excavat.