A powerful eruption at Indonesia's Semeru Volcano triggers a fast-moving pyroclastic flow, sending a superheated mixture of ash, rock, and gas racing down the mountainside. These deadly volcanic ...

The Volcano of Fire is one of the most active in Central America and an eruption in June killed 194 people. Another 234 are officially missing, although organizations supporting t ...

An interdisciplinary team from Florida State University's Department of Earth, Ocean, and Atmospheric Science has uncovered ...

Ninetyeast Ridge, the long, pale-blue line slicing through the Indian Ocean near 90 degrees east, is the largest underwater mountain ridge in the world. Image via Wiki Commons. The deep oceans are far ...