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 ...

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 ...

A new type of volcano has been discovered in the western Pacific Ocean. The findings may reduce the strength of a popular theory of “hotspot” volcanism, researchers say. Naoto Hirano at the Tokyo ...

IntroductionFrom June 12 to 13, 2026, Swan visited Lassen Volcanic National Park in Northern California for a two-day, ...

Over millions of years, the Earth’s upper layers have performed a dance that has created mountains, volcanoes, continents, ridges and ocean trenches. Tectonic plates play a key role in this process.

More than 1,000 active volcanoes around our planet can sputter glowing lava and smoky ash, and the world's biggest one has erupted in Hawaii after 38 years dormant. The largest active volcano in the ...

Mars is known for its volcanoes, some of which dwarf the largest volcanoes on Earth. And, although Mars’ volcanoes have been extinct or dormant for millions of years, there’s growing evidence for some ...