Smoke billows from the mouth of Mt. Shasta like a thunderous cough. Within moments, clear skies turn gray, and the sun vanishes behind thick, shifting layers of volcanic gas and ash. Visitors snap ...

FLAGSTAFF — Just 30 minutes from downtown Flagstaff, Sunset Crater Volcano National Monument offers a striking look at northern Arizona’s explosive past. The cinder cone, now standing over 8,000 feet ...

The tiny Mojave Desert outpost of Amboy has seen a lot of change over the past 50 years or so. First, Route 66 was bypassed by Interstate 40, directing travelers away from the businesses that had ...

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 ...

Supervolcanoes are defined by their ability to produce supereruptions — explosions of more than 240 cubic miles of volcanic material. But scientists disagree on how useful the term is. When you ...