Researchers say the ancestral Colorado River formed an ancient lake in northern Arizona roughly 6.6 million years ago, which spilled out westward onto the landscape that would eventually become the Gr ...

The study says the Colorado River took a convoluted path as it carved the canyon — and got help from an ancient lake.

The Grand Canyon is one of America's greatest natural wonders. It's also a huge tourist destination. How you can beat the crowds and see the landmark.

Researchers have tracked the Miocene Epoch’s version of the Colorado River to a now dry lakebed east-southeast of the Grand Canyon. Reading time 3 minutes Geologists know that the Colorado River has ...

Let’s call it the West’s most critical 80 miles. The Colorado River begins as a dribble in Rocky Mountain National Park before swelling into a lifeline that sates and powers some 40 million downstream ...

Russell has a PhD in the history of medicine, violence, and colonialism. His research has explored topics including ethics, science governance, and medical involvement in violent contexts. Russell has ...

One hundred years after John Wesley Powell’s historic trek down the Grand Canyon, National Geographic went on a commemorative expedition to see the wonders the geologist wrote about and the risks he ...

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