Scientists aboard a U.S. Coast Guard icebreaker have discovered an unusual volcano-like structure in the Arctic Ocean, potentially emitting gas and rising 500 meters from the seafloor.

A surprise eruption of steam in a Yellowstone National Park geyser basin that sent people scrambling for safety as basketball-sized rocks flew overhead has highlighted a little-known hazard that scientists hope to be able to predict someday.

A new fissure eruption on Iceland's Reykjanes Peninsula, the third since December, began without posing immediate danger to populated areas or infrastructure.

The Grindavík eruptions began on January 13, 2024, in the Southern Peninsula of Iceland.

A volcanic eruption began near Hagafell mountain on the Reykjanes Peninsula in Iceland at 10:17 pm, following an M4.2 earthquake, with local authorities seeking to determine its impact.