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 most daring and innovative accomplishment at the turn of the 20th century.
The coal miners' battle for dignity led to the largest armed insurrection since the American Civil War.
This stunning film portrait of Yosemite National Park uses the 1851 diary of the first expedition of soldiers into the Native American territory.
The contradictory history of a dam that became a statement of American power and prestige.
The inspiring story of the modern environmental movement.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
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.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.