Most volcanoes form at the boundaries of Earth's tectonic plates, which are huge slabs of crust and upper mantle that fit together like puzzle pieces. Think of these plates as massive rafts floating ...

The most volcanic world in our solar system has sprouted a new volcano. And its lava flows are enormous. Jupiter's molten moon Io has been surveyed by a number of passing spacecraft, allowing ...

The Earth's mantle might not always move along in lockstep with the overlying tectonic crust—as set out in science textbooks for decades—but may instead behave differently. This is the conclusion of ...

Io, Jupiter's moon, continues to reveal itself. The latest images transmitted by the Juno spacecraft offer an unprecedented view of its tumultuous surface. The Juno mission made a surprising discovery ...

On May 2, 2008, the Chaitén volcano in Chile awoke with unexpected fury after more than 9,000 years of dormancy. The eruption blasted rocks and ash a dozen miles into the air, and then heavy rainfall ...

Bermuda has a unique volcanic past. About 30 million years ago, a disturbance in the mantle’s transition zone supplied the magma to form the now-dormant volcanic foundation on which the island sits.

In the shadow of Italy’s Vesuvius, a lesser-known volcano rumbles: Campi Flegrei. An eruption could endanger the millions of residents of the city of Naples. NOVA is available to stream on pbs.org and ...

Jupiter's moon Io, a world teeming with volcanoes. The most volcanic world in our solar system has sprouted a new volcano. And its lava flows are enormous. Jupiter's molten moon Io has been surveyed ...