Volcanoes are grouped into four types: cinder cones, composite volcanoes, shield volcanoes and lava volcanoes. Cinder cones are circular or oval cones made up of small fragments of lava from a single ...

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 ...

Gabi Laske is a professor of geophysics at the University of California—San Diego. Hawaii's Mauna Loa, the world's largest active volcano, began sending up fountains of glowing rock and spilling lava ...

A volcano is an opening in the Earth's crust that allows molten rock, gases, and debris to escape from below the surface. The ...

The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. Hawaii’s Mauna Loa, the world’s largest active volcano, began sending up ...

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 ...