Scientists working alongside the U.S. Coast Guard have discovered a 1,640-foot-tall (500 meters) structure that looks like an underwater volcano off the coast of Alaska. The structure may be spewing ...

Researchers from the National Oceanic and Atmospheric Administration Ship Fairweather and the University of New Hampshire analyze mapping data in the U.S. Coast Guard Cutter Healy’s computer lab while ...

A dormant volcano in Ethiopia erupted after 10,000 years of silence. This event shows how the world's little-known volcanoes ...

Even inactive volcanoes pose dangers. “Dormant doesn’t mean safe,” says Harding Bush, associate director of security operations at Global Rescue. “A volcano can shift from quiet to deadly with little ...

Mapping in the Chukchi and Beaufort seas off Alaska has uncovered a 1,640-foot-tall structure on the seafloor, but scientists say it's too early to determine the nature of the discovery. When you ...