A wolf advocacy group says it plans to sue Rocky Mountain National Park officials over their elk reduction plan. WildEarth Guardians says returning wolves to the park is the best way to control its elk population.

If you've been to the South Rim of the Grand Canyon during the high season, which anymore runs nearly eight months a year, you know just how hard it is to find a parking space or to simply navigate the area around Grand Canyon Village in your rig. Now, following nearly two years of work, the National Park Service has released its preferred solution to the rim's transportation woes.

Never mind that the groundhog saw his shadow, or that an ice storm just blew through the mid-Atlantic states. Spring must be near, for Shenandoah National Park officials have announced their opening schedule.

Bike riding can be as dangerous as climbing Mount Rainier or horseback riding in the Rockies? That's the preliminary finding by a National Park Service team that assessed the risk of commercial cycling at Haleakala National Park.