The international race to develop biological weapons during the 20th century.
With the clock ticking and the city under fire how many could be saved?
After 18 years of struggles, the Golden Gate Bridge opened on May 27, 1937.
The Battle of the Bulge was the biggest and bloodiest single battle American soldiers ever fought.
The story of the polio crusade pays tribute to a time when Americans banded together to conquer a terrible disease.
Postwar New York City and the global economic order told through the story of the World Trade Center.
After notorious revolutionary leader Pancho Villa's raid on Columbus, New Mexico, General John Pershing and his 150,000 man cavalry set out to get Villa.
The historic journey of Apollo 8 captivated the world in 1968 -- a bright spot in a year marked by political assassinations, race riots, and the Vietnam War.