Mount Spurr, whose volcanic ash darkened Anchorage’s skies in 1953 and 1992, may be building toward another eruption.

When most of us think about active volcanoes in the U.S., Mount St. Helens, Mt. Rainier and a few others will first come to mind. However, one of the most active volcanoes in the region is about a ...

It appears that these magma bodies exist beneath volcanoes over their whole lifetime, not just during an active state.' ...

Volcanoes generally come in three flavors: active, dormant, and extinct ... investigations into magma chambers beneath a ...

One of the most active volcanoes in the world sits just a few hundred miles ... it will likely not have a direct impact on ...

By Dean Murray A Hawaiian volcano looks like a scene from "The Lord of the Rings" as it spews lava this week. A United States ...

Frequent earthquakes 300 miles off the coast of Oregon signal escalation for the underwater volcano named Axial Seamount.

A seismic survey challenges the long-standing belief that only active volcanoes have large magma bodies sitting beneath them.

One of the most active volcanoes in the world sits just a few ... impact on the millions of people living on the West Coast from Alaska to California. "The eruption is not going to cause a tsunami ...