This is your chance to potentially claim one of 450 self-guided rafting tour permits for the Grand Canyon's Colorado River.

GRAND CANYON NATIONAL PARK, Ariz.— Tribes, conservation organizations and community groups today defended Baaj Nwaavjo I’tah ...

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 ...

The Earth's Grand Canyon took millions of years to carve, but the moon's grand canyons took about ten minutes.

Scientists proposed an explanation for the formation of Vallis Schrödinger and Vallis Planck near the lunar south pole, which ...

Scientists say America is no longer the only place with a Grand Canyon as NASA spots two enormous chasms carved into the ...

SINGAPORE – People visiting Chinatown in the days leading up to Chinese New Year are encouraged to check a live crowd map before heading ... The police also advised the public to report any ...

A trip to Grand Teton National Park can be a wonderful experience for visitors of all ages, but it's important to take certain safety precautions. For instance, hiking is one of the main ...

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 ...

GRAND CANYON NATIONAL PARK, Ariz. – A chlorine gas leak at Grand Canyon National Park’s main water supply has forced park officials to close all inner canyon corridor trails. Officials said the leak ...

Trails in Grand Canyon National Park were ... officials announced that all inner canyon corridor trails had reopened to the public. "The chlorine gas leak has been stabilized, and crews remain ...