What makes volcanoes dangerous?

Fountains of lava, whiffs of toxic gases, acidic plumes of vaporized seawater and blankets of ash: those are just a few of the dangers that volcanoes have delivered in recent weeks, with Guatemala's Fuego Volcano and Hawaii's ...

Explosive volcanoes spawned mysterious Martian rock formation

Explosive volcanic eruptions that shot jets of hot ash, rock and gas skyward are the likely source of a mysterious Martian rock formation, a new study finds. The new finding could add to scientists' understanding of Mars's ...

Glowing red lava causes more to flee from Philippine volcano

Glowing-red lava spurted in a fountain and flowed down the Philippines' most active volcano on Tuesday in a stunning display of its fury that has sent more than 34,000 villagers fleeing to safety and prompted police to set ...

A close-up look at an uncommon underwater eruption

On July 18, 2012, passengers on an airline flight over the Southwest Pacific Ocean glimpsed something unusual—a raft of floating rock known as pumice that indicated an underwater volcanic eruption had occurred on the seafloor ...

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