The contradictory history of a dam that became a statement of American power and prestige.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
The story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
The New Deal program CCC put three million young men to work in camps across America.