A volcano that has not erupted in 250,000 years has shown signs of returning to life. Scientists warned that an eruption ...

A fiery mystery has puzzled geologists for decades: where did the lava fueling one of Earth’s largest volcanic events come from? A new study may finally have the answer. Scientists have long believed ...

The Axiel Seamount is one of a chain of undersea volcanoes along the Juan de Fuca Ridge, which runs along Oregon and Alaska.

Villages closer to Mount Spurr could be at risk of experiencing more ashfall than the Anchorage area if the volcano were to erupt.

The most active volcano in the Pacific Northwest could erupt 'any day now,' experts say. The last time it blew, it triggered ...

An underwater volcano is about to blow up near Oregon? Can we expect a repeat of the Tonga eruption that sent 148 ft high ...

Scientists say they used satellites and other technology to plumb the inner workings of a Bolivian volcano that last erupted 250,000 years ago.

In 2010, the eruption of Eyjafjallajökull volcano in Iceland caused the largest air traffic shutdown since World War Two.

Anchorage, Alaska's largest city, was about 41 miles to the south. Despite the relatively moderate magnitude, the tremor was felt across a wide area, including in Anchorage, where residents reported ...

Several U.S. states, from Hawaii’s fiery peaks to Alaska’s smoldering mountains, have the highest number of active ...

Uturuncu, a dormant volcano in Bolivia, appeared to be getting ready to erupt following earthquakes and "sombrero" shaped ...

Mount Spurr, a volcano 78 miles from Anchorage, is being monitored for signs of a possible eruption. If it blows, Mount Spurr ...