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

Recently unearthed fossils from the Cambrian period shed light on a key stage of evolution, when life became much more ...

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

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

GRAND CANYON, Ariz.— When I first peered into the layer cake that is the Grand Canyon several years ago, I was surprised to spot a continuous strip of green between a grayish section and a red ...

A USA TODAY analysis found more than 600 fires that burned at least partly inside national parks in the past four decades.

Paleontologists unearthed fossils in the Grand Canyon dating back more than 500 million years that offer a new look into a ...

It's too dangerous. Grand Canyon National Park is one of the world's ultimate bucket list destinations, a geologic spectacle that must be seen to be fully appreciated.

Rocks gathered along the Colorado River contained evidence of a bustling community of animals in an ancient sea.