Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
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.
The story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
Native Alaskans, oil company representatives, environmentalists, politicians, and others tell the story of the 800-mile pipeline.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.