What can you do during a visit to Yellowstone National Park? Answering that can run the gamut from watching Old Faithful to learning about Thomas Moran, but to give you a head-start, here are 10 items that should be on your "to-do" list when you visit the park.

A search is under way in Grand Canyon National Park for a 69-year-old man who is overdue from a hike in the canyon.

Thanks to some help from ole Sol, two loops of the Cougar Rock Campground in Mount Rainier National Park will be open this weekend.

Interior Secretary Ken Salazar on Thursday promised the administration's support in moving forward the restoration of the Florida Everglades, a massive project that would greatly benefit Everglades National Park.