A mysterious and highly active undersea volcano off the Pacific Coast could erupt by the end of this year, scientists say.

Researchers used seismic tomography to reveal that fluid buildup, not magma, is driving Uturuncu’s deformation, indicating ...

The 1980 Mount St. Helens eruption began with a steady series of earthquakes in March. By April it began spewing smoke, ...

Alaska, Hawaii and areas along the mainland West Coast would be at risk if an earthquake erupts along the Cascadia subduction ...

Sunday marks 45 years since Mount St. Helens erupted in Washington state. The deadly eruption happened shortly after 8:30 a.m ...

57 people died in the eruption, but the disaster gave scientists a way to develop monitoring tools, improving their ability ...

The May 18, 1980, eruption of Mount St. Helens in southern Washington claimed 57 lives and blasted the terrain of old-growth ...

The 45th anniversary of the catastrophic eruption of Mount St. Helens is on May 18. Here's what to know and when the volcano ...

For many people who lived through the 1980 eruption of Mount Saint Helens, it is the biggest news story of their lifetimes.

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 ...

An ancient papyrus scroll left "unreadable" after the eruption of Mount Vesuvius nearly 2,000 years ago is finally revealing its secrets. The scroll was discovered in the remains of a luxurious Roman ...