Mathematician and paranoid schizophrenic John Nash's work became a foundation of modern economic theory.
How five abolitionist allies turned a despised fringe movement against chattel slavery into a force that literally changed the nation.
With data compiled from tens of thousands of sex questionnaires, Alfred Kinsey changed America's views about sex with the Kinsey Reports.
P.T. Barnum -- huckster, con man, promoter, entertainer and founder of "The Greatest Show on Earth".
The last surviving member of a California Indian tribe became a sensation in 1911.
"The Wizard of Menlo Park," Inventor Thomas Edison, built the first practical light bulb and revolutionized the world.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
Quilting and the intimate clues it yields about the lives of 19th century women.