Yellowstone National Park sits atop one of the most studied volcanic systems on Earth, and the question of what a full-scale caldera-forming eruption would do to the United States draws enormous ...

Beneath Yellowstone National Park sits a supervolcano capable of releasing energy equivalent to 1,000 Hiroshima-sized blasts per second during a full eruption. Scientists estimate that nearby states ...

Valentine Geyser in the Norris Geyser Basin in Yellowstone National Park unexpectedly sprang to life again with 13 documented ...

Yellowstone National Park is a place of wonder and beauty that never ceases to amaze the millions who visit each year.

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week’s contribution is from Michael Poland, geophysicist with the ...

A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park. Geologists call this type of bulge “volcanic uplift.” It’s often caused by ...

Scientists have identified massive geological formations that are far more dangerous than Yellowstone — and they’re already active beneath Earth’s surface. These hidden systems store enormous pressure ...

HAWAII VOLCANOES NATIONAL PARK — When Scott and Pamela Rippel found out scientists were predicting a fountain of lava would erupt in Hawaii Volcanoes National Park on Jan. 24, they extended their ...

Add Yahoo as a preferred source to see more of our stories on Google. The Shiveluch volcano is one of Kamchatka's most active (Handout) (Handout/Kamchatka branch of the Federal Research Center ...

A volcano in Russia's far east on Wednesday spewed ash several kilometers into the sky, authorities said, putting on a spectacular display in its latest eruption. The Shiveluch volcano is one of the ...