During the Great Depression, Americans built the Hoover Dam, overcoming technical challenges to erect one of the greatest engineering works in history.
The Pennsylvania Railroad Company accomplished an enormous engineering feat, but destroyed a great architectural monument.
A gripping tale of medical intervention gone awry, and one of the most barbaric mistakes of modern medicine.
Accounting for America's most famous inventor and his role in America's future.
Brothers Wilbur and Orville Wright built a flying machine that made its first flight in Kitty Hawk, North Carolina in 1903.
Begun during the Civil War, the transcontinental railroad employed 20,000 men, mostly immigrants, who built the iron road with their bare hands.
Originally settled as a mail stop, Las Vegas changed from an Old West vacation town, to a mafia haven, to the "Atomic City" and "Sin City."
At the height of segregation, an unlikely alliance between a black medical genius and a white surgeon led to a pioneering medical breakthrough.
Robert Noyce's invention of the microchip launched the world into the Information Age.