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

The United States Geological Survey (USGS) shows lava fountains shooting up high in the latest episode of an ongoing eruption ...

( NewsNation) — A volcano in Alaska that last erupted in 1867 is displaying signs of rumbling. Located roughly 140 miles ...

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

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

Increased seismic activity from one of Hawaii’s – and Earth’s – most active volcanoes led to roughly 320 earthquakes in 24 hours, according to the United States Geological Survey’s ...

The National Volcano Early Warning and Monitoring System is standardizing and modernizing the nation's hodgepodge of USGS and academic volcano monitoring stations.

Scientists have registered nearly 350 small-magnitude earthquakes beneath Mount St. Helens in the last five months, but they say there's no cause for concern.