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.
George Eastman introduced the Kodak and Brownie camera systems and transformed photography into something anybody could do.
Explore how Orson Welles' genius use of the new medium of radio struck fear into an already anxious nation.
The internationally famous carnival of delights in New York was the birthplace of the hot dog and the roller coaster.
An updated look at the Alabama tenant farmer families that Walker Evans and James Agee documented in their 1936 Pulitzer Prize-winning book.
Murderer, martyr, hero - John Brown's violent crusade against slavery would divide the nation and spark the Civil War.
The first woman to fly solo across the Atlantic, Earhart disappeared in 1937 during an attempt to circumnavigate the world by airplane.
Equipment failure, human error and bad luck led to the country's worst nuclear accident in 1979.
The story of the polio crusade pays tribute to a time when Americans banded together to conquer a terrible disease.