A summertime hike to the bottom of the Grand Canyon is never just a walk in the park, but trail closures and detours amid construction of a new water pipeline are prompting additional safety concerns ...

The 56-day advance reservation system for tours of the USS Arizona Memorial in Hawaii is temporarily suspended until further notice ...

Bleached earless lizards may have a covering over where its ear openings should be, but it still has a very well-developed inner ear which allows it to hear things. Because of their camouflage against ...

Four people were injured when a float plane crashed at Katmai National Park in Alaska over the July Fourth weekend.

A 67-year-old Texan planning to spend a night at Phantom Ranch on the floor of Grand Canyon National Park collapsed and died ...

Two people were saved by bystanders who performed CPR while a third clung to tree branches until rescuers arrived.

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

Federal funding for a detention center for "criminal illegal aliens" located inside Big Cypress National Preserve in Florida ...

Mount Rainier National Park in Washington state recorded hundreds of light earthquakes early Tuesday morning, though the ...

A decision Tuesday by the U.S. Supreme Court to allow the Trump administration to proceed with a government-wide reduction-in ...

A wildfire shut down the Staircase Area and campground as well as several other spots in Olympic National Park.

I guess this is the photo they took for the Guardian,” says an excited trio of young tourists, pausing on a wooden walkway to ...