Worryingly for Yellowstone, Professor Mather points out that supervolcanoes seem to put out a greater proportion of their ejected material as pyroclastic flows. That means towns near the ...

Scientists calculate that the pillar of ash from the Yellowstone explosion rose some 100,000 feet, leaving a layer of debris across the West all the way to the Gulf of Mexico. Pyroclastic flows ...

A new study shows a volcanic eruption of Yellowstone may be even less likely than we thought: Scientists have discovered a ...

For the first time, geoscientists detected the top of Yellowstone’s magma reservoir. It is active and dynamic, but not in danger of erupting, they found.

Mount Spurr has been showing signs of an eruption since last year, but scientists think one is even more imminent.

Attendees offered a prayer to 43 victims who died in 1991, and to another person who died in the pyroclastic flows that occurred on June 23, 1993. A pyroclastic flow is a deadly, fast-moving mix ...

According to a HowStuffWorks documentary on Yellowstone, while the volcano ... The devastation would not stop there, as lava flows and pyroclastic materials could cover an area stretching over ...

YAMAGUCHI—An eruption of Mount Aso in Kumamoto Prefecture 90,000 years ago created a pyroclastic flow that traveled 170 kilometers north to the Sabagawa river here, the longest such distance ...