A major U.S. city is under threat from a potential volcanic eruption after more than 20 earthquakes were recorded in Alaska.

Though perhaps not well known to the general public, Axial Seamount is considered a key window into Earth's geology. Axial is significant because it sits atop the Juan de Fuca Ridge, the region where ...

The Mount St. Helens eruption anniversary prompts investigation into the California earthquakes: eruption history, threat levels.

An underwater volcano 300 miles off the coast of Oregon is displaying signs of a potential eruption, UW researchers found.

Things are heating up hundreds of miles off the coast of Oregon, where a large undersea volcano is showing signs of impending eruption, scientists say. The volcano, known as Axial Seamount, is located ...

From a research submersible, scientists saw hardened lava, dead tube worms and orange flashes from an eruption in the East ...

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