Volcanoes are rumbling as scientists monitor earthquakes at Washington's Mount Rainier and Alaska's Iliamna volcano.

The most alarming case may be West Antarctica, where more than 100 active volcanoes lie buried beneath the ice. One glacier ...

Yellowstone National Park announced Monday the discovery of a new 13-foot baby blue hot spring. It emerged with little ...

Analysis of Northwest Africa 16286 reveals it comes from underneath the Moon, where things were hot for longer than ...

Nestled in Michigan’s rugged Upper Peninsula, where winters are long and the people are hearty, sits a treasure trove that would make Indiana Jones rethink his career choices—the A.E. Seaman Mineral ...