A young geologist entered a cave without sunlight or clocks, unaware of how profoundly isolation would alter his sense of time.

A forgotten church on a French hilltop has led archaeologists to a discovery that challenges views of the early Middle Ages.

A wooden cover around a 200-foot chimney turned the world's greatest refrigerator at the 1893 Chicago World's Fair into a ...

Thirty thousand Romans spent 11 years digging a tunnel through a mountain, but its grand opening exposed a major problem.

Inside a single drop of water, trillions of DNA strands work together to solve problems, revealing a surprising new way to ...

The future of space food may start in a trash bin. Scientists are using microbes to turn plastic bottles into nutrients for ...

Two birds may be the loudest on Earth, but scientists still can't explain why their calls reach such extremes.

Buried for millennia, ancient tools in Montana's mountains are raising unexpected questions about the people who lived there ...

Your morning coffee may do more than wake you up. Scientists have uncovered how this everyday drink activates a biological ...

Some people seem to return to themselves just before death. Strange final conversations and bursts of brain activity are ...

Billions of chestnut trees once dominated American forests, until a mysterious threat brought their reign to an abrupt end.

Cats, happiness and a common parasite collide in a 93-country study that revealed a pattern researchers did not expect to ...