Known as Obsidian Cliff, the Yellowstone mountain is one of the country’s highest quality deposits of “the sharpest natural substance on Earth,” according to Douglas H. MacDonald, a ...

At another excavation in Indiana, blades made of Yellowstone obsidian were found over 1,200 straight-line miles from the park. By the eighteenth century the tribes that inherited Hopewell ...

“For thousands of years before Yellowstone became a national park, it was a place where people hunted, fished, gathered plants, quarried obsidian (which they used to field dress bison), and used ...

Yellowstone was established on March 1, 1872, when President Ulysses S. Grant signed the Yellowstone National Park Protection Act to preserve the region’s hydrothermal and geologic features.

Here are the best Yellowstone restaurants so you'll know exactly where to eat on your epic Yellowstone National Park vacation ...

Thousands of years before Euro-Americans “discovered” the bubbling mudpots and eruptive geysers of what is now Yellowstone National Park, early Americans were spending part of their summer ...

This guide to Yellowstone National Park includes some of the best places to see wildlife, learn about Indigenous history, and explore the park's natural features.

Most people already know a thing or two about Yellowstone National Park. It’s the world’s first national park and home to Old Faithful. “Probably 95% of people that come to Yellowstone visit ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Mark Stelten, research geologist ...

Nature: Yellowstone National Park 03:29. The U.S. Fish and Wildlife Service has recommended that Yellowstone's most iconic species, the grizzly bear, be removed as a threatened species under the ...

As the National Parks Service (NPS) shared in a 2016 blog, the U.S. has its own Dragonstone-esque cache: Obsidian Cliff in Yellowstone. "Obsidian is known as Dragonglass throughout the series ...

About that time University of Colorado microbiologist Norman Pace led a team doing microbial analyses in Yellowstone. In samples gathered at Obsidian Pool, using PCR and other methods, the team ...