A "sharp, volatile-rich cap” about 2.5 miles under Yellowstone’s surface “acts like a lid,” trapping pressure and heat that ...

Corked Volcano Researchers have found evidence that a giant "lid" made of magma could be stopping the supervolcano in ...

The Axiel Seamount is one of a chain of undersea volcanoes along the Juan de Fuca Ridge, which runs along Oregon and Alaska.

On May 3, 1999, 76 tornadoes tore across the U.S. Plains states, killing about 50 people and injuring hundreds.