A Martian volcano once thought to be the result of a single eruption turns out to have a much more complex past. Orbital imaging and mineral data show it developed through multiple eruptive phases, all powered by the same evolving magma system underground.

Dozens of people have died, hundreds are missing and many more homes were destroyed after separate volcanic eruptions in Hawaii and Guatemala that made headlines worldwide in recent months. And although those volcano eruptions are not part of a trend, experts have said, the volcanoes in question are far from the only dangerous ones in the world.

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. How and if a volcano explodes depends on how and when bubbles of water vapor and carbon dioxide form in the rising magma.

When you buy through links on our articles, Future and its syndication partners may earn a commission. The volcano Krasheninnikov erupted for the first time in about 500 years following the 8.8 magnitude earthquake in eastern Russia. | Credit: Sheldovitsky ...

The fragile-looking filaments of cooled lava known as Pele’s hair can form when pockets of bubble-rich lava pull apart rapidly, experiments suggest. Among all the ways that molten rock can solidify after erupting from a volcano,

Scientists have uncovered a long-missing piece of the volcanic puzzle: rising magma doesn’t just form explosive gas bubbles when pressure drops—it can do so simply by being sheared and “kneaded” inside a volcano’s conduit. These shear forces can ...

Hawaii's Kilauea volcano resumed erupting Friday by shooting an arc of lava 100 feetinto the air and across a section of its summit crater floor. It was Kilauea's 31st display of molten rock since December, an appropriately high frequency for one of the ...

A major discovery beneath Yellowstone National Park has revealed a magma cap located nearly 2.4 miles below the surface, which could help prevent a massive volcanic eruption. Using advanced seismic imaging and computer modeling, researchers found that this ...

A volcano in Hawaii has been erupting for more than year, routinely spewing fountains of lava more than a thousand feet into the air. Kilauea in Hawaii’s Volcanoes National Park had its 39th explosive episode on December 23, the one year anniversary of ...