Scientists monitored the El Chichón volcano's movements and recorded some changes in its crater.

New seismic imaging shows magma lingering beneath quiet Cascade volcanoes, shaping how scientists monitor and plan for eruptions.

A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park.

Scientists are monitoring a city of Chicago-sized swath of rising ground at the northern volcanic rim of the Yellowstone ...

The U.S. Geological Survey’s Hawaiian Volcano Observatory website is currently offline, officials said Sunday. The outage ...

Scientists know that changing tree leaves can indicate when a nearby volcano is becoming more active and might erupt. In a new collaboration between NASA and the Smithsonian Institution, scientists ...

This week the U.S. Geological Survey Cascades Volcano Observatory, in cooperation with the U.S. Forest Service and Mount Hood National Forest, installed three new volcano monitoring stations on the ...

Add Yahoo as a preferred source to see more of our stories on Google. Volcanoes in Alaska, Washington state, Oregon and Hawaii have been rumbling and even spewing lava, enough to spark a swarm of news ...

American Samoa is a United States territory which comprises the easternmost islands of a volcanic island chain formed by the Samoan hotspot in the South Pacific Ocean. Its small islands are the tops ...

Imagine waking up one morning to news that a massive volcanic eruption has shaken a remote region with absolutely no advance notice. This isn't science fiction. It's happening right now around the ...

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) website is currently offline, raising concerns among the public and researchers alike. However, officials have confirmed that this ...