Paleontologists unearthed fossils in the Grand Canyon dating back more than 500 million years that offer a new look into a time when complex life emerged on Earth.

From coral reefs to thundering waterfalls, these UNESCO-listed natural wonders are Earth’s most awe-inspiring treasures, each ...

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

Fire burned the Grand Canyon's North Rim Lodge, not for the first time, but the building left a legacy for all who visited it.

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

Less famous but just as unforgettable, these state parks showcase iconic landscapes without the long lines at America’s national parks.

Learn more about the Meteor Crater near the Grand Canyon and how it may have created a paleolake thousands of years ago.

A new study suggests a meteor strike that created Arizona’s Meteor Crater 56,000 years ago may have triggered a massive ...

The paper suggests that a dam created a 50-mile-long, 300-foot-deep paleolake with beavers' tracks in caves above the river, indicating a significant geological event possibly related to Barringer ...

The Grand Canyon, one of the most iconic geological formations on Earth, may hold deeper secrets about our planet’s history ...

New research reveals that a meteorite strike near Winslow, Arizona, approximately 56,000 years ago, may have triggered a ...