A supervolcano is like a regular volcano on steroids. If it erupts, it would kill 100,000 people in an instant. And expel over a thousand times more material than a regular volcano. It would send so ...

A live camera at Hawaiʻi’s Kīlauea volcano captured a rare sight this week — a swirling “volnado” forming next to a fountain of lava, the latest dramatic reminder of the mountain’s restless nature.

More than 2,000 earthquakes were recorded in one day. An underwater volcano off the coast of Oregon is gearing up for an eruption, according to volcanologists who are monitoring for activity. The ...