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Unnatural Wonder

In the 55 years since the federal government poured more than 5 million cubic yards of concrete to form Glen Canyon Dam, the demand for water and electricity has turned the river’s ecology upside down.

Unnatural wonder: A journey into the heart of a river forever changed by human hands

“The Colorado River in Grand Canyon is not a native ecosystem,” said Jack Schmidt, a Utah State University geomorphologist and former director of the Grand Canyon Research and Monitoring Center in Flagstaff.

What is it then?

“A novel ecosystem,” Schmidt said, and “still the world’s most awesome experience.”