Onlookers at one of Yellowstone National Park's most popular sites watched a large bison take its final steps into a scalding hot spring and die in a horrifying reminder of what can happen away from ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week’s contribution is from Michael Poland, geophysicist with the ...

A bison died after it appeared to stumble into a hot spring at Yellowstone National Park last week while visitors looked on. The incident occurred during the early morning of June 21 at Grand ...

Just because they’re bacteria doesn’t mean they can’t be beautiful. A half-mile boardwalk accesses the east side of Grand Prismatic Spring as well as Excelsior Geyser, which was once the largest ...

Things at Yellowstone National Park took a dark turn last weekend. Horrified tourists watched a bull bison get boiled alive after stepping into scalding hot springs. The animal walked straight into ...

A fall snowstorm blew through Yellowstone National Park late Thursday and early Friday, creating a winter wonderland for visitors who were treated to shimmering white landscapes, close encounters with ...

Shane Kimbrough @astro_kimbrough Can you find Grand Prismatic Spring in this pic? The 300-foot wide hot spring has its famous rainbow-colored edges.

The Grand Prismatic hot spring in Yellowstone National Park is sourced from a magma chamber beneath it. The bright colours are produced by hydrophilic bacteria in the mineral-rich water. Disclaimer: ...

Black Diamond Pool eruption provides dramatic footage after being captured on official camera ...

The beating heart of Yellowstone National Park is without a doubt the Grand Prismatic–the largest hot spring in the US. Its colorful bands are the product of hardy bacteria and algae that live in the ...

The Grand Prismatic Spring is the most recognizable thermal feature of Yellowstone National Park, but some of its most fascinating features are invisible to the naked eye. Underwater exists a diverse ...