I've visited all 63 major US national parks. I think Great Smoky Mountains and Grand Canyon are some of the best parks for ...

On the morning of June 21, visitors at Grand Prismatic Spring in Yellowstone National Park observed a bison slip into a ...

In geology, even small layers can tell big stories. But figuring out the origins of such small layers can be a challenge, ...

In what year was Yellowstone National Park established as the world's first national park? Test your knowledge of Yellowstone National Park! Attempt this GK quiz on its location, wildlife, and facts ...

Grand Canyon of the Yellowstone is ranked #1 out of 17 things to do in Yellowstone National Park. See pictures and our review of Grand Canyon of the Yellowstone.

Grand Prismatic Spring, USA Wyoming is home to many iconic natural wonders of the world, including Grand Teton National Park and Devils Tower National Monument, but it also has the world’s third ...

A bison fell into the 160-degree Grand Prismatic Spring and died. An eyewitness tells us the ordeal was like seeing "the circle of life unfold.” ...