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

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 complex.

Researchers turned to the Grand Canyon’s layers of sedimentary rock to unlock secrets of this pivotal moment in the history of life, digging into the flaky, claylike shale of the Bright Angel ...

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

The Grand Canyon’s North Rim has been special to generations of Americans. A frequent visitor reflects on this national ...

Five hundred million years ago, the Earth saw a huge jump in the diversification of life forms called the Cambrian Explosion.

A treasure trove of exceptionally preserved early animals from more than half a billion years ago has been discovered in the ...

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

Back then, the Grand Canyon was closer to the equator, and the region was covered by a warm, shallow sea teeming with burgeoning life — aquatic creatures resembling modern-day shrimp, pill bugs and ...