A volatile-rich cap sitting just above Yellowstone’s magma reservoir is reshaping how scientists understand what keeps the ...

Great Sitkin volcano, a remote peak in Alaska’s Aleutian Islands, has been slowly pushing lava into its summit crater for ...

These fiery features can be as dangerous as they are mesmerizing. Here are a few things to keep in mind if you live near or ...

Add Yahoo as a preferred source to see more of our stories on Google. Yellowstone averages between 1,500 and 2,500 earthquakes per year. In Yellowstone National Park, a bulge the size of 279 football ...

Mount Etna has long puzzled geologists because it doesn't fit any of the three classic ways volcanoes are thought to form. A ...

Mud volcanoes are often pictured as dramatic geological phenomena featuring the sudden eruption of large volumes of fiery mud ...

Volcano Watch” is a weekly column and volcano/earthquake activity update written by U.S. Geological Survey Hawaiian Volcano ...