The Great Unconformity involves a common gap of hundreds of millions to billions of years in the geologic record ... from the rim of the Grand Canyon (United States) to the unconformity at the base of ...

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 ...

GRAND CANYON NATIONAL PARK, AZ (AZFamily) — People can once again enjoy a hike at Arizona’s world-famous natural wonder. The National Park Service said on Wednesday evening that inner canyon ...

Scientists found that an asteroid impact carved two massive canyons on the moon in minutes. High-speed debris helped shape ...

On Monday, a federal judge upheld National Monument protections on parts of the Grand Canyon. On Wednesday, the Navajo Nation reached an agreement with Energy Fuels, the nation's largest uranium ...

Since his death in 323 BCE, the world has been obsessed with Alexander the Great, who set out from his ... who adds that the Macedonian “redrew the map of the world” by force, where his ...

By the time he died, aged just 32, he had redrawn the map of the northern hemisphere ... the world has been obsessed with Alexander the Great, who set out from his kingdom of Macedon (in modern ...

PHOENIX (AZFamily) — Major trails at the Grand Canyon re-opened Thursday afternoon after being closed for nearly 20 hours following a chlorine gas leak inside the canyon last night. The closures ...