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.
A biography of the last outlaws of the American Wild West
The story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
The contradictory history of a dam that became a statement of American power and prestige.
Native Alaskans, oil company representatives, environmentalists, politicians, and others tell the story of the 800-mile pipeline.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.
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.