The Dragon Bravo Fire that destroyed the North Rim lodge will affect visitors and nearby communities. Here's the Canyon's financial impact on Arizona.

A remarkable coincidence occurred 56,000 years ago, when the impact that created Meteor Crater triggered both a landslide-dammed lake and a paleolake formation in the Grand Canyon. Earth’s ancient ...

New research links the impact at Meteor Crater to a Grand Canyon landslide that may have created an ancient lake 56,000 years ...