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.
The most daring and innovative accomplishment at the turn of the 20th century.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
The effort of pioneering researchers to conceive babies through in vitro fertilization.
The last surviving member of a California Indian tribe became a sensation in 1911.
Legendary bank robber John Dillinger garnered the admiration of many struggling Americans, but FBI took him down with a message: crime doesn't pay.
Dwight D. Eisenhower was one of America's least understood presidents. Part of the award-winning Presidents collection.
Lyndon Johnson pushed progressive programs before the Vietnam War eroded his support. Part of the award-winning Presidents collection.
Robert E. Lee, the leading Confederate general of the American Civil War, remains a source of fascination and, for some, veneration.