In geology, even small layers can tell big stories. But figuring out the origins of such small layers can be a challenge, ...

“The Yellowstone system is one that’s been stagnant for a long time.” The volcano’s largest eruption, which earned it the title of a supervolcano, occurred 2.1 million years ago.

(VIDEO: USGS via CNN Newsource) — A small eruption occurred at Yellowstone National Park in Wyoming on Saturday, and a newly installed webcam captured it. The webcam was set up just weeks before ...

A small eruption occurred at Yellowstone National Park in Wyoming on Saturday, and a newly installed webcam captured it.The webcam was set up just weeks before the eruption to monitor activity at ...