Robert Noyce's invention of the microchip launched the world into the Information Age.
During World War II, more than a thousand women signed up to fly with the U.S. military as WASPS.
John Scopes' free speech trial pitted science against religion after the teacher presented Charles Darwin's theory of evolution in a Tennessee school.
With data compiled from tens of thousands of sex questionnaires, Alfred Kinsey changed America's views about sex with the Kinsey Reports.
"The Wizard of Menlo Park," Inventor Thomas Edison, built the first practical light bulb and revolutionized the world.
The Alaskan Highway stands today as one of the boldest homeland security initiatives ever undertaken.
The Pennsylvania Railroad Company accomplished an enormous engineering feat, but destroyed a great architectural monument.
America's first great songwriter, Stephen Foster, wrote 200 songs but died a penniless alcoholic at 37.