The Petrified Forest holds trees buried by volcanoes 50 million years ago, while Yankee Jim features some of the oldest ...

While it might seem like a no-brainer, your attire during hiking can impact the overall experience. Here are clothing items ...

Forest managers repeatedly burned and thinned fuels across the zone that the Dragon Bravo Fire torched. But Grand Canyon ...

Five hundred million years ago, the Earth saw a huge jump in the diversification of life forms called the Cambrian Explosion.