This stunning film portrait of Yosemite National Park uses the 1851 diary of the first expedition of soldiers into the Native American territory.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The converging forces, circumstances, personalities and events that propelled a group of English men and women west across the Atlantic in 1620.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
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.
High on a granite cliff in South Dakota's Black Hills tower the huge carved faces of four American presidents: George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt.
The contradictory history of a dam that became a statement of American power and prestige.
The inspiring story of the modern environmental movement.