Lava began bubbling out of Hawaii’s most active volcano once again on Tuesday as Kilauea’s sporadic eruption resumed.

How do volcanologists determine the height of eruptive plumes from Yellowstone’s past explosive eruptions? Ironically, you ...

The new map shows where volcanic ash would fall in the event of a Yellowstone supereruption, with the supervolcano's last ...

Kilauea began continuously releasing lava from its summit caldera inside Hawaii Volcanoes National Park on Wednesday morning ...

Numerous small, shallow earthquakes continue to rumble under Alaska's Mount Spurr, prompting fears of an imminent eruption.

The known sequence of Maunaloa’s 1868 events began with an eruptive phase beginning at about dawn March 27 at the summit, lasting a couple of hours. Seismicity escalated thereafter, with Kaʻū ...

Lava spatters inside and flows down the side of the north vent inside Halemaʻumaʻu Crater at the summit of Kīlauea volcano on ...

The Alaska Volcano Observatory said signs indicated a Mount Spurr eruption was likely, though not certain, in the weeks or ...

Alaska's Mount Spurr, an active volcano near the most populated region in the state, is getting even closer to an eruption, ...

A volcano near Alaska’s largest city is showing new signs of unrest, with experts saying the likelihood of an eruption at ...