The Grand Canyon is one of the most beautiful natural wonders in the world, but that tranquility could be under threat by ...

Exceptionally preserved Cambrian fossils uncovered in the Grand Canyon show how evolution accelerated in resource-rich waters ...

What could possibly link a collision in space on the Arizona desert to a landslide that irreversibly altered the face of the Grand Canyon? Stanton’s Cave, 150 feet above the Colorado River and high ...

Here's what we know about the Grand Canyon Lodge and its history on the North Rim, which is visited by far fewer people each year than the more developed South Rim.