Kenneth Sims and other research scientists recently discovered that mafic volcanism of Henrys Fork Caldera -- located in ...

After visiting all 63 national parks in the US, my favorites include Yosemite and Grand Teton. I think one of the worst parks is Gateway Arch.

Trout Unlimited is proposing to complete the second phase of work to create better fish spawning and rearing habitat on Mill ...

As the president seeks to log, mine, drill and develop, Yellowstone researcher Chris Servheen calls the administration's proposed policy "management based on ignorance." ...

The Montana Department of Transportation started clearing its side of the Beartooth Highway on April 18. The National Park ...

On a recent trip to Yellowstone National Park, tourist Cindy Shaffer captured the unique moment when a herd of bison stopped ...

For decades, scientists knew magma was simmering beneath the earth at Yellowstone National Park. A team of researchers ...

For the first time, geoscientists detected the top of Yellowstone’s magma reservoir. It is active and dynamic, but not in ...

Scientists found that a "cap" of bubbles and magma stands between the magma reservoir underneath Yellowstone National Park ...

Ever been mesmerized by the swirling colors of Grand Prismatic Spring and wondered what fuels that otherworldly boil? It ...

Yellowstone National Park opened for the busy season on Friday with a 3% increase in staff, despite mass layoffs at the ...

A tourist ventured too close to one of the most iconic geysers in Yellowstone National Park, and part of her illegal ...