"The Grand Canyon is an epic Rosetta Stone for geology," Denver Museum of Nature and Science geologist James Hagadorn said.

Around 700 million years ago, the Earth cooled so much that scientists believe massive ice sheets encased the entire planet ...

The century-old silent footage in "Endurance" has been revamped with a respect for its verisimilitude. I do wish, though, ...

Imagine a world where continents are fused into one massive landmass, and life as we know it is on the brink of ...

A massive meteorite that struck Earth early on in its history wreaked havoc on the planet, but the impact may have allowed ...

Geologists have uncovered strong evidence from Colorado that massive glaciers covered Earth down to the equator hundreds of ...

If you thought the mass extinction caused by the Chicxulub asteroid impact 65 million years ago was bad, think again. Travel ...

A rare Triassic fossil unearthed in Brazil, Gondwanax paraisensis, could provide new insights into the origins of dinosaurs.

Scientists have long been fascinated by how ancient fish like Tiktaalik evolved the structures needed to walk on land.

The Arecibo message contained an image of a man only. But what might seem a sexist choice deserves a more subtle ...