"The Wizard of Menlo Park," Inventor Thomas Edison, built the first practical light bulb and revolutionized the world.
Begun during the Civil War, the transcontinental railroad employed 20,000 men, mostly immigrants, who built the iron road with their bare hands.
The story behind the development of the oral contraceptive that put women in control of birth control.
The contradictory history of a dam that became a statement of American power and prestige.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
The story of the polio crusade pays tribute to a time when Americans banded together to conquer a terrible disease.
The historic journey of Apollo 8 captivated the world in 1968 -- a bright spot in a year marked by political assassinations, race riots, and the Vietnam War.
Engineer James Eads tamed the mighty Mississippi, turning New Orleans into the second largest port in the nation.