The far side of the Moon has its own versions of the Grand Canyon—two of them, in fact! A new study explains how these deep ...

While a visit to the Grand Canyon is mesmerizing and worthwhile, it's not necessarily easy. We consider the closest and most ...

The Grand Canyon Trust recently released the results of a poll on Arizona voters’s support for national monuments. The poll ...

A federal judge set aside a deadline facing federal workers offered a buyout by the Trump administration as he weighs its ...

Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object ...

Arizona Senate President Warren Petersen said Interior Secretary Burgum can act now to unleash America's uranium capabilities.

A midair collision at the Grand Canyon killed over 100. The disaster partially led to the start of the FAA and changed air ...

Center for Biological Diversity Reports President Trump’s Interior Order Threatens to Open Grand Canyon National Monument to ...

Despite a federal ruling rejecting a motion to remove protections on land in near the Grand Canyon, an agreement between ...

A federal judge has rejected a lawsuit by Arizona lawmakers challenging former President Joe Biden’s designation of a ...

A visit to the Grand Canyon is a true bucket list item for anyone on a US road trip. But Arizona isn't the only place where an ambitious explorer can find a Grand Canyon. NASA’s Lunar ...

GRAND CANYON NATIONAL PARK, Ariz.— Tribes, conservation organizations and community groups today defended Baaj Nwaavjo I’tah Kukveni – Ancestral Footprints of the Grand Canyon National Monument, which ...