Since 2005 the Solfatara crater in Italy has been releasing increased volumes of gas, catching the attention of researchers ...

The area northeast of Yellowstone Lake is home to the three largest-known hydrothermal explosion craters on earth: Mary Bay, ...

This once unremarkable lake underwent a series of bizarre changes, leading to a dramatic and unexpected event.

Scientists will be drilling a 1.3-mile-deep borehole into an active volcano to tap into the potentially limitless energy from the magma ...

"The great basin," he wrote, "has been formerly one vast crater of a now extinct volcano." The lieutenant was right: Yellowstone is a volcano, and not just any volcano. The oldest, most famous ...

Written by Mark Stelten, deputy scientist-in-charge at the Yellowstone Volcano Observatory, the post analyzes the volcano's eruptive history and current activity to show that the sleeping giant ...

Mary Bay, a crater formed 13,000 years ago ... The National Park Service says an eruption of the Yellowstone volcano is ...