From breathtaking valley views to serene waterfalls, these beginner-friendly trails in Yosemite National Park are perfect for ...

Ranger naturalist George D. Marler monitoring of changes in hydrothermal activity in Yellowstone was useful in understanding ...

You don't need to be a cattle baron to live out your cowboy dreams — head to Greenhorn Ranch. "Yellowstone" aired its last ...

Holiday activities have ended, snow and ice has fully glazed the state and cabin-fevered thoughts wander to long summer days on a river, lake or in the mountains.