Woolly mammoths, giant sloths and saber-toothed cats were a fact of life for early humans. New clues in Earth’s northernmost ...

Water is ubiquitous on Earth—about 70% of Earth's surface is covered by the stuff. Water is in the air, on the surface and ...

A rock on Mars spilled a surprising yellow treasure after Curiosity accidentally cracked through its unremarkable exterior.

Xinhua. Chinese scientists found for the first time a meteorite crater on a mountain ridge, the discovery of which enriches ...