In the late 19th century, paleontologists Edward Cope and O.C. Marsh uncovered the remains of hundreds of prehistoric animals in the American West, including dozens of previously undiscovered dinosaur species. But the rivalry that developed between them would spiral out of control, permanently damaging their careers and threatening the future of American paleontology.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
This stunning film portrait of Yosemite National Park uses the 1851 diary of the first expedition of soldiers into the Native American territory.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
High on a granite cliff in South Dakota's Black Hills tower the huge carved faces of four American presidents: George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt.
John Wesley Powell's epic journey into the unknown Grand Canyon was filled with adventure as his team mapped the Colorado River for the first time.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
A central figure in the narrative of how the west was won, Wyatt Earp and his story became an American legend. Part of the Wild West collection.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.