Her 1963 warnings about the effects of pesticides and herbicides - especially DDT - sparked a revolution in environmental policy and created a new ecological consciousness.
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 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 American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.
The 300-year saga of the American whaling industry.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.