T he Grand Canyon is one of the most visited national parks in the U.S., attracting over four million visitors to northern Arizona annually. It supports a significant tourism econ ...

They entered, at last, the Grand Canyon. The date was July 13, 1938. Elzada Clover and Lois Jotter, two botanists at the University of Michigan in Ann Arbor, had started down the river 23 days ...

Each year, millions of travelers are drawn to Grand Canyon National Park. Even though it’s widely photographed, nothing compares to seeing this natural wonder of the world in person. Its sheer ...

The biodiversity in the Grand Canyon is dependent on annual buildups of sediment rich sandbars, which have eroded after 20 years of drought. Because of the strong snow pack from this past winter ...