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 ...

Volcanic eruptions frequently interfere with human affairs; impacts range from minor nuisances to major disasters. Some 50 to 65 different volcanoes typically are active in any given year, and among ...

In the rumbles and groans of underwater volcanoes, Jackie Caplan-Auerbach finds her favorite harmonies — and clues to the Earth’s interior. We often think of volcanoes as skyscraping marvels, but ...