Far beneath the forests and hot springs of the American West, the continent’s largest active volcanic system is rumbling in ...

Yellowstone has erupted three times in the past 2.1 million years, and each event buried large portions of North America ...

An "unusually large" ice volcano in Iceland could be about to blow after more than 130 earthquakes hit the region in a five-hour period, experts say. The earthquake swarm began in the northwestern ...

Mount Etna erupted on Monday (June 2) with a ginormous cloud of ash and triggered an avalanche of volcanic material that has ripped down the side of Europe's largest active volcano. The massive ...

A volcano near Alaska’s largest city is showing new signs of unrest, with experts saying the likelihood of an eruption at Mount Spurr in the next few weeks or months has increased. The Alaska Volcano ...

Mount Etna's Voragine crater erupted for the first time in two years. — -- Italian residents were treated with quite the spectacle on Thursday. Fire and lightning lit up the sky over Sicily after ...

Olympus Mons, a shield volcano on Mars, is the largest volcano in the solar system, measuring approximately 370 miles in diameter and 26 kilometers in height. The formation of Olympus Mons and three ...

ANCHORAGE, Alaska (AP) — A volcano near Alaska’s largest city is showing new signs of unrest, with experts saying the likelihood of an eruption at Mount Spurr in the next few weeks or months has ...

Learn more about volcanic activity on Mars and how it may have once provided vital elements to the atmosphere.

ANCHORAGE, Alaska — A volcano near Alaska's largest city is showing new signs of unrest, with experts saying the likelihood of an eruption at Mount Spurr in the next few weeks or months has increased.