Emerald Cave, also known as Emerald Cove, shimmers with luminous green light. Here's the best time to visit Emerald Cave and how to get there.

A new study has revealed the formation of the Grand Canyon may be tied to the creation of another Arizona landmark.

A new emergency system for the Grand Canyon is getting life-saving messages to people with little cellphone service.

The flooding events throughout the Texas Hill Country are nothing short of a tragedy. Lives were taken, homes were destroyed ...

Crews fighting a wildfire that destroyed the nearly century-old Grand Canyon Lodge and a visitors center were focused Tuesday on stopping the flames from consuming nearby cabins, mule stables and ...

As of July 1, the North Rim of Grand Canyon National Park has entered Stage 3 water restrictions due to ongoing challenges in ...

Geology is full of detective stories about the Earth's history, and a new paper in Geology by University of New Mexico ...

Beginning in the 1880s, humans built progressively larger diversions, dams, and reservoirs in the Rio Grande Basin, leaving ...

The NWS warning was in effect for regions of the Grand Canyon below 4,000 feet elevation. Temperatures were forecast to ...

Here's what's open and closed at Grand Canyon North Rim, South Rim and Phantom Ranch in the wake of wildfires that destroyed the North Rim lodge.

Jomarie Calasanz, 26, is still missing after she was swept away in Kaweah River near Paradise Creek Bridge in Sequoia ...

This year will be different, at least for one portion of the park. A wildfire has torn through a historic lodge and ended the ...