New analyses of mantle xenoliths from French volcanoes reveal that magma degassing, not surface cooling, resets the water contents long used to map the deep Earth.

After an eruption, DIY cushions of gas help searing torrents of gas, ash, and rock spread miles from their source within a matter of minutes. ByKatherine J. Wu Monday, April 8, 2019 NOVA NextNOVA Next ...

Avalanches of ash, gas and rock that cascade downhill during volcanic eruptions may be even more dangerous than scientists had realized. Pulses of high pressure form within these slides, known as ...

If you live in the western United States, the chances are very good that you live within the cradle of a supervolcano. Yellowstone is but the most famous example. There are volcanoes, and then there ...

A superheated torrent of gas, rock, and volcanic debris tore 4 kilometers down Mayon volcano’s Mi-isi Gully in early June 2026, marking the longest pyroclastic density current recorded during the ...

On May 2, 2026, a wall of superheated gas and volcanic debris broke loose from Mount Mayon’s summit and tore 4 kilometers down the Mi-isi Gully on the volcano’s southwest flank. It was the longest ...

SILICIC volcanic rocks (Moat volcanics) of the White Mountain magma series, which crop out in the Moat Mountain and Mount Kearsarge (Pequawket) areas of northern New Hampshire, USA 1,2, are dominantly ...

Dumping literal tons of hot volcanic material down a lab flume may finally have revealed how searing mixtures of hot gas and rock travel so far from volcanic eruptions. These pyroclastic flows can ...

Volcanologist Professor Chris Jackson discovers evidence of the deadly pyroclastic flow. Volcanologist Professor Chris Jackson reveals the power of the deadly pyroclastic flow that had swept through ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The eruption of the Fuego volcano—or volcano of fire—in Guatemala on ...