The contradictory history of a dam that became a statement of American power and prestige.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
The most daring and innovative accomplishment at the turn of the 20th century.
John Wesley Powell's epic journey into the unknown Grand Canyon was filled with adventure as his team mapped the Colorado River for the first time.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
A personal story of one family's dramatic effort to hold onto their family farm in Iowa as massive foreclosures sweep the nation in the 1990s.