Though the volcano’s magma chambers could hold enough material for a caldera-forming event, none of them are likely to erupt soon.

The median age of Arizonans has only been increasing over the past decade. Here's which counties are the oldest and youngest in the state.

A local water utility will soon be competing to be named home of the best tasting drinking water in the United States.

A magnitude 3.9 earthquake was measured near Norris Geyser Basin in Yellowstone National Park on Tuesday evening. It's the ...

A number of studies have given us fascinating images showing Yellowstone’s magma reservoirs. But how are those images created ...

Off the coast of Oregon, a massive undersea volcano, Axial Seamount, is gearing up for its next eruption. Situated 300 miles ...

Axial Seamount, a massive underwater volcano located nearly 300 miles off the Oregon coast, is showing signs of an imminent ...