Volcanoes

A newly-formed island off the coast of Iwo Jima in the Pacific Ocean was spotted in satellite images after it emerged during an underwater volcanic eruption at the end of October.

A volcanic eruption off the Japanese island of Iwo Jima on Oct. 30 led to the formation of a new 330-foot-wide island just north of the explosion site.

NASA has released a new image of an eerie, cranium-shaped caldera in the Sahara Desert, which looks like it is staring right at the orbiting camera.

A new National Geographic "Explorer" episode follows an expedition to Saunders Island and the first documented ascent of Mount Michael, a volcano hosting the world's eighth lava lake.

A dormant supervolcano in California's Eastern Sierra Nevada mountains lets off the occasional earthquake swarm, but new evidence suggests it's simmering down.

Scientists disagree about the timing of the Taupō volcanic eruption — one of the largest on Earth in the past 5,000 years — but shards of glass discovered in Antarctic ice could settle this debate.

The magma that erupts from basaltic volcanoes in the middle of tectonic plates originates from within Earth's mantle — rather than from the outer crust — and is propelled upward by CO2, not water.

As well as tornadoes, loud bangs sounding across the Reykjanes Peninsula indicate that pockets of methane within the lava are exploding.

Dozens of circular loops made from smoke and volcanic gas are rising from a peculiar vent on Mount Etna every day.

Drone footage captures Iceland's "baby volcano" throwing a hissy fit, spewing molten lava into the sky.