Large explosive eruptions occur in Yellowstone around once every 700,000 years, according to the U.S. Geological Survey.

For decades, researchers in and around Yellowstone National Park have used seismic waves — imagine giving the region an MRI — ...

“The western part of the Yellowstone caldera is waning,” said Ninfa Bennington, a volcano geophysicist with ... technique that produces more precise maps of the large reservoirs of magma ...

When Yellowstone erupts again ... This crater-like divot in the rock isn't fed by a narrow vent like typical volcanoes. Instead, a large magma pool sits right below a shallow surface rock layer.

Many hands have been wrung over Yellowstone National Park's supervolcano, which has the power to deliver global catastrophe with a single eruption. If the volcano exploded tomorrow, it would cover ...