Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
The story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.