Geologists have uncovered compelling new evidence that reshapes the understanding of Hells Canyon, America’s deepest river ...

Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object slammed into the moon 3.8 billion years ago.

The North Rim of Grand Canyon National Park invoked Stage 3 water restrictions in recent days due to ongoing challenges in ...

Long ago, the Grand Canyon wasn’t a land of plunging ravines and gaping gullies, but the site of towering mountains, not dissimilar to South America’s Andes of today. They are known as the ...

Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object slammed into the moon 3.8 billion years ago.

In the 19th century, many people believed that landscapes like the Grand Canyon were shaped by volcanoes and earthquakes. But one American geologist named John Newberry had different ideas.

The Grand Canyon is the biggest canyon on earth: 277 miles long, 10 miles wide, and a mile deep. It contains some of the oldest exposed rock on earth, Precambrian Vishnu schist, formed 1.7 billion ...

About 3.8 billion years ago, two massive canyons likely formed on the moon in a span of less than 10 minutes, according to new research. Watch Now Menu Local National Weather Sports Traffic Watch Now ...

The body of a missing hiker was recovered along the Colorado River on Sunday after flash flooding in Grand Canyon National Park prompted the rescues of more than 100 people.

Moon Grand Canyon carved out in less than 10 minutes by bullet-fast space rocks. ... formed roughly 3.8 billion years ago when rocky debris from an asteroid or comet struck the lunar surface.

By Ashley Strickland, CNN (CNN) — About 3.8 billion years ago, two massive canyons likely formed on the moon in a span of less than 10 minutes, ...