A powerful magnitude 7.0 earthquake along a volatile Pacific fault has shaken the U.S. West Coast, triggering a brief tsunami ...

The rocks on the summit of Mount Everest were created in a warm and shallow sea many years before the Himalayas were formed.

"We're not saying, and we can't say, that there's no life in Europa. What we're saying is that it's a harder proposition, ...

Extended Continental Shelf likened to a new 'basement'—nearly 60% of Alaska. Mead Treadwell of the U.S. Arctic Research Commission explains.