Think about a mountain that keeps getting taller but never explodes. This might sound impossible, yet it happens more often than most people realize. Volcanoes don't always follow the same playbook of ...

Using a novel imaging technique for volcanoes that produces high-resolution pictures of seismic wave properties, a new study reveals a large, previously undetected body of mobile magma underneath ...

Should anyone ever decide to make a show called "CSI: Geology," a group of scientists studying a mysterious and rapidly inflating South American volcano have got the perfect storyline. Researchers ...

Add Yahoo as a preferred source to see more of our stories on Google. Shock images show roads split apart near Grindavik in Iceland as the country braced for a volcanic eruption following a series of ...

A volcano that erupted after being asleep for more than 100,000 years is leading more volcanologists to say we must redefine volcano activity to ensure eruptions don't surprise us.

BEND, Ore. — Half an hour west of this mountain town in central Oregon, in an area covered by forest, is a growing bulge in the terrain that eager scientists say could be the beginnings of a volcano.

BEND, Ore. (AP) — A bulge near the prominent Cascade Range volcano known as South Sister has nearly stopped growing, scientists say. The uplift was spotted more than a decade ago and led scientists to ...

MOUNT ST. HELENS, Wash. - Part of the lava dome in Mount St. Helens' crater has risen 10 to 30 feet in the past day, on top of 250 feet in the past week, U.S. Geological Survey scientists said Friday.

Submarine volcanic activity along a section of the Kolumbo crater on the seafloor, observed with SANTORY monitoring equipment. Credit: SANTORY Using a novel imaging technique for volcanoes that ...