Much of the credit for the digital revolution is owed to the early pioneers of Silicon Valley -- from transistor inventor William Shockley and the Traitorous Eight to investor Sherman Fairchild, Intel CEO Andy Grove and microprocessor inventor Ted Hoff. This photo gallery features 12 men whose work and innovations helped to launch the some of the most significant technological advances in history.
Author, soldier, scientist, outdoorsman and caring father, he was the youngest man to become president. Part of the award-winning Presidents collection.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
A man who symbolized African American equality fought a proponent of Hitler's Aryan racial theories on the eve of World War II.
Prohibition's effect on Detroit, Michigan, the first major American city to "go dry," and the growth of the liquor smuggling industry.
Clemente was an exceptional baseball player whose career sheds light on larger issues of immigration, civil rights and cultural change.
Television game shows became an instant national phenomenon in 1955, but four years later contestant Charles van Doren admitted they were a scam.
The bizarre saga of the Symbionese Liberation Army and Patty Hearst's kidnapping and conversion to her captors' cause.
An African American minister whose dream of ending racism galvanized millions of Americans in the civil rights movement.