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Yellowstone has erupted three times in the past 2.1 million years, and each event buried large portions of North America under ash. The last one happened 640,000 years ago, a fact news outlets love to ...

A sideways flow of hot mantle rock, not a deep plume rising from near Earth's core, may be feeding one of the planet's most closely watched supervolcanoes. That is the picture emerging from a new ...

When one thinks of supervolcanoes, ideas such as end-of-world catastrophes, gigantic explosions, darkness caused by ash clouds covering the sun, and total madness come to mind. But scientifically ...

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View post: What It's Like Traveling to Nuuk, Greenland, as a U.S. Tourist: 12 Tips for an Arctic Adventure Ever been mesmerized by the swirling colors of Grand Prismatic Spring and wondered what fuels ...

Videos of animals appearing to flee Yellowstone National Park have gone viral, leading to speculation that the park’s infamous “supervolcano” may be about to blow. Climate website Green Matters ...

A caldera—like the one at Yellowstone Park spanning parts of Wyoming, Idaho and Montana—is a large depression or hollow formed when a volcano erupts and the magma chamber beneath it empties, leading ...

United States Geological Survey (USGS) scientist Mark Stelton (left) and Kenneth Sims, a UW professor of geology and geophysics and a member of the USGS Yellowstone Volcano Observatory, examine a ...

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 ...