During the Great Depression, Americans built the Hoover Dam, overcoming technical challenges to erect one of the greatest engineering works in history.
The dramatic story of the nation's first subway
A six-hour series on how the West was lost and won, from the Gold Rush in 1848 until Wounded Knee in 1893.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
A biography of the last outlaws of the American Wild West
Begun during the Civil War, the transcontinental railroad employed 20,000 men, mostly immigrants, who built the iron road with their bare hands.
The contradictory history of a dam that became a statement of American power and prestige.
In 1960, Francis Gary Powers' U-2 spy plane was shot down over the Soviet Union.
The unusual life of David Vetter, who lived permanently inside a germ-free environment due to severe combined immunodeficiency.