The giant supervolcano that lies under Yellowstone National Park is cooling off in the west but staying hot in the northeast.

Unlike smaller volcanic eruptions that primarily produce lava flows, a Yellowstone eruption would eject most of its magma as ash, creating colossal plumes that would blanket much of North America ...

An imaging technique that produces more precise maps of the large ... that have occurred at Yellowstone in the past 2.1 million years. In those events, volcanic ash reached from the Pacific ...

And a new study is helping paint a picture of the beast that lurks beneath the beauty of Yellowstone Park. A map of the ... The supervolcano is not the enormous mound of ash and lava you see ...

Despite widespread fears of a catastrophic "supervolcano" eruption ... misunderstandings about Yellowstone eruptions is the potential for ash clouds. While a super-eruption would spread ash ...