New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

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

Two gigantic canyons on the moon — both deeper than the Grand Canyon — were carved in less than 10 minutes by floods of rocks ...

The Biden team, urged by Arizona Governor Katie Hobbs, argued that the area in the Grand Canyon region contained historic landmarks, sacred sites and items of high scientific significance ...

Most injuries at Bryce Canyon National Park can be avoided with proper preparation, common sense and caution. This includes wearing the right shoes, being aware of the weather and driving safely.

The Navajo Nation has successfully reached a settlement with Energy Fuels Inc. to enable the resumption of uranium ore shipments from mining operations near the Grand Canyon. The deal, announced on ...

U.S. Forest Service geologist Gordon Grant calls it a “geologic gift ... Jefferson to a bit south of McKenzie Pass. That's the area we estimated at 81 cubic kilometers (or three Lake Meads).

The 1956 collision over the Grand Canyon killed more than 100 people. At the time, it was the deadliest civilian plane crash and it remains one of the worst in U.S. history. Here's everything you ...