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 ...

Volcanoes are a powerful force of nature. There are about 1500 active volcanoes on our planet right now. A volcano is an opening in the Earth's crust that allows lava and other volcanic matter to ...

The Cascade Volcanic Arc stretches from Northern California to southern British Columbia and contains more than a dozen volcanoes. The U.S. Geological Survey classifies 11 of them, including Mount ...

SKAMANIA COUNTY, Wash. — For thousands and thousands of years, the Pacific Northwest has had a history of active volcanism. And on May 18, 1980, Mount St. Helens violently erupted. Many in central and ...

The new documentary The Volcano: Rescue From Whakaari is a harrowing look at the phreatic eruption of Whakaari on White Island off the coast of the North Island in New Zealand on December 9, 2019. The ...

For most people, volcanoes exist mostly in the imagination, in spectacular movie moments and baking-soda-and-vinegar school experiments. But real volcanic activity is so much cooler, packed with ...

Mars may have released sulfur gases that trapped heat, shaped the climate, and created conditions for ancient life.

Extinct volcanoes are hard to study – we never see them erupt. Using a unique experimental technique, we were able to recreate a certain type of extinct volcano in a lab, learning more about the magma ...

Some volcanoes can produce eruptions so powerful they release oceans of dust and toxic gases into the air, blocking out sunlight and changing a planet’s climate for decades. By studying the topography ...