Valentine Geyser in the Norris Geyser Basin in Yellowstone National Park unexpectedly sprang to life again with 13 documented ...

Valentine Geyser's activity in the day of love remains under wraps because of park regulations.

The same geyser that erupted last summer in a hydrothermal explosion along a Yellowstone National Park boardwalk was caught erupting on video again thanks to a newly-installed webcam to track the ...

Add Yahoo as a preferred source to see more of our stories on Google. This is a photograph of Twin Buttes in Lower Geyser Basin looking to the northwest, with Excelsior Geyser of Midway Geyser Basin ...

S trange things are afoot in Yellowstone National Park.

If you don't get to see it, there are more than 500 active geysers located within Yellowstone National Park, including Old Faithful. Established in 1872, Yellowstone National Park was the world's ...

MISSOULA, Mont. — A 3.9 magnitude earthquake was recorded near Norris Geyser Basin in Yellowstone National Park on Tuesday night. The quake was recorded at about 6 p.m. The U.S. Geological Survey ...

A bison in Yellowstone National Park appeared to stumble into the scalding water of Grand Prismatic Spring, causing its death as tourists looked on during the park's busiest season. The bison fell ...

Few geological scenarios capture public imagination quite like a full-scale eruption of the Yellowstone supervolcano. The ...

WENDY STOVALL and WILLIAM KELLER Yellowstone Volcano Observatory Yellowstone National Park Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone ...