A top Arizona Republican is hoping the Trump administration will do what a federal court wouldn’t: overturn a national ...

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

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

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

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 ...

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 ...

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