Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: NASA/GSFC CTX global mosaic: ...

Wildfires have forced evacuations at two U.S. national parks in the West as summer monsoon storms increase lightning in the ...

The NPS recommends avoiding hiking the Grand Canyon's inner trails between 10 a.m. and 4 p.m., when temperatures are at their ...

Wildfires prompted evacuations, air quality concerns and decimated a historic hotel in the Grand Canyon North Rim. See photos.

“The addition of Grand Canyon for the 2025-26 academic year is a significant win for the student-athletes at GCU and in the Mountain West,” Commissioner Gloria Nevarez was quoted in the release.

Grand Canyon Caverns and restaurant have opened after being closed for nearly 3 years. Here's why it closed and how to go into the Grand Canyon caves.

We've rounded up the best Grand Canyon tours from Las Vegas, whether you seek a relaxing bus tour, a thrilling helicopter ride, or a little bit of both. Note that most of these tours require a ...