The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.
The New Deal program CCC put three million young men to work in camps across America.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.
Native Alaskans, oil company representatives, environmentalists, politicians, and others tell the story of the 800-mile pipeline.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
This stunning film portrait of Yosemite National Park uses the 1851 diary of the first expedition of soldiers into the Native American territory.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.