Object Details Author Babcock, R. Scott (Randall Scott) Contents Geology of the older precambrian rocks of the upper granite gorge of the Grand Canyon / R.S. Babcock, E.H. Brown, and M.D. Clark -- The ...

The fossils, which date to between 507 million and 502 million years ago, suggest the Grand Canyon’s prehistoric ecosystem was ... way,” says study co-author James Hagadorn, a curator of geology at ...

Two of Arizona's most famous landmarks may be linked by cosmic violence: the asteroid that gouged out Meteor Crater may have also caused the formation of an ancient lake in the Grand Canyon.

A trove of fossils, including a penis worm with a spiked, invertible throat, suggests this spot may have been a cradle of Cambrian evolution.

Arizona is home to many beautiful spots, but one stands out among the rest. In fact, this natural wonder recently was named the best in the nation.

Think you’ve mastered the canyon? Take part two of our Grand Canyon National Park quiz and challenge your knowledge of its history and geology.

The Dragon Bravo Fire is now the largest wildfire ever recorded in the Grand Canyon, burning more than 145,000 acres.