Mount St. Helens -- What is a volcano? -- Layers of earth -- Kinds of volcanoes -- Eruptions -- Other dangers -- How volcanoes help -- From lava to land -- Dormant volcanoes -- Geothermal energy -- ...

How do volcanoes work? What happens beneath their surface? What causes the vibrations—known as tremor—that occur when magma ...

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 ...

Stephen Smith is a managing editor for CBSNews.com based in New York. A Washington, D.C. native, Steve was previously an editorial producer for the Washington Post, and has also worked in Los Angeles, ...

Volcanoes that have laid dormant for millions of years could revolutionize the sourcing of important rare earth elements, a new study published in Geochemical Perspectives Letters suggests.

Volcanoes in Alaska, Washington state, Oregon and Hawaii have been rumbling and even spewing lava, enough to spark a swarm of news stories. But despite the jolts and temblors, geologists say there's ...

NASA scientists say the images provide far more than just a striking never-before-seen view of the Martian geography. Studying the features detailed in Odyssey's photos could help NASA prepare for ...

A mysterious type of magma found within extinct volcanoes scattered around the world could contain an abundant supply of rare earth elements, crucial ingredients for electric vehicles, wind turbines ...