Rob and Jennifer Gunderson were visiting Yellowstone National Park for their anniversary, and couldn’t believe their eyes when they saw people walking right up to the 1,000-pound animal.

YVO just released an updated version of its response plan for geological hazards in Yellowstone National Park. The plan ...

According to new research, the active volcano that sits west of Naples has a "tuff" layer about two miles beneath the surface that traps volcanic gases deep below the caldera's floor.

The same geyser that erupted last summer in a hydrothermal explosion in Yellowstone National Park was recorded erupting again ...

On the other hand, volcanic eruptions in Wyoming have been discovered which are older than the Yellowstone eruptions. Keeping ...

The largest volcanoes in Earth’s history owe their formation to powerful geological phenomena called mantle plumes—upwellings of abnormally hot rock within the Earth’s mantle that rise toward the ...

It’s one of the world’s largest supervolcanoes, and recent work out of the University of New Mexico led to a breakthrough ...

Fair warning: Spoilers for Yellowstone beyond this point. Read only if you want to know. What Happened in “Sins of the Father”? We start with a flashback of John and his father, John Sr.

According to Idaho State Police, the May 1 crash on one of the main corridors to Yellowstone National Park claimed the lives of six international tourists traveling in a tour van and the impaired ...

Scientists have found a way to monitor volcanic carbon dioxide levels — one of the first signs a volcano might be about to ...