Volcanoes across the country are beginning to wake up and erupt, and no one has a good explanation for why it's happening.

Volcanoes are rumbling as scientists monitor earthquakes at Washington's Mount Rainier and Alaska's Iliamna volcano.

The Uturuncu volcano in Bolivia, believed to be extinct for 250,000 years, shows internal signs of activity that surprise ...

Magma from the mantle finds its way to the surface, where it erupts as lava or ash and gas—sometimes in spectacular spurts, ...

Adventurous souls must balance excitement with proper preparation when tackling the most dangerous mountains in Indonesia.

Dozens of climbers were on the active volcano in West Sumatra Province when it began spewing a column of ash nearly 3,000 meters, about 10,000 feet, high, according to Indonesia’s National ...

One of the most famous mountains in Washington, Mount Rainier, has been rumbling over the last day due to the amplified seismic activity.

It has been more than 20 years since a mission flew so closely by Io, and the spacecraft’s camera, called JunoCam, captured high-resolution images that showcased active volcanic plumes, mountain ...