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

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

While maps already show Yellowstone deposits across the US from previous big eruptions 640,000, 1.3million, and 2.1million years ago, they don't provide information on the original ash thickness ...

A surprise eruption of steam in a Yellowstone National Park geyser basin that sent people scrambling for safety as basketball-sized rocks flew overhead has highlighted a little-known hazard that ...

BILLINGS, Mont. — A surprise eruption of steam in a Yellowstone National Park geyser basin that sent people scrambling for safety as basketball-sized rocks flew overhead has highlighted a little ...