Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness. As a result, the Wilderness Act passed in 1964.
The most daring and innovative accomplishment at the turn of the 20th century.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
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 contradictory history of a dam that became a statement of American power and prestige.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.
The story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.