When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
In 1927, the Mississippi River flooded from New Orleans to Illinois, leaving a million people homeless and leading to a major black migration to the North.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.
The inspiring story of the modern environmental movement.
The 300-year saga of the American whaling industry.
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 most daring and innovative accomplishment at the turn of the 20th century.