The Yellowstone Plateau Volcanic Field has some of the largest rhyolite lava flows on Earth. Have you ever wondered what these flows look like in their interior, or how the unique textures that can be ...

A river that drained the slopes of a now-vanished volcano may have carved Yosemite Valley's depths during the last 10 million ...

The supervolcano in Yellowstone National Park in Wyoming has long been associated with fears of an extinction-level event when it erupts for the first time in more than 70,000 years (even though the ...

Axial Seamount, a volcano hundreds of miles off the coast of Oregon, may be a problem in the near future. This underwater ...