New monitoring data from the Yellowstone Volcano Observatory is showing abnormal ground deformation and seismic activity in ...

Yellowstone's dynamic underground hydrothermal system remains a scientific enigma. Recent studies reveal a complex network of ...

Two separate bear attacks last week left one person dead and two others hospitalized in the northern national parks. Spring ...

A major Yellowstone eruption likely won’t happen for thousands, and potentially millions, of years. Scientists say that the magma underneath Yellowstone is mostly solid and not eruptible. One study ...

Grizzly bear activity seemed to start with a roar on May 4 when two hikers were mauled in Yellowstone National Park. But the big bears have been active since close to New Year’s Day. And that has ...