Since 1937, the Golden Gate Bridge has stood through high winds, strong water currents, heavy traffic loads, and earthquake tremors. How did engineers design it to be structurally sound?
In a word: mathematics.
Here's your chance to explore a few suspension bridge building principles. Test engineering concepts, see their intricate math, and learn how they play out on the bridge today.
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.
While the U.N. debated strategies for control of atomic energy, the U.S. Navy was preparing for nuclear tests on Bikini Island.
Robert Moses fueled some of the most ambitious -- and controversial -- public works projects ever conceived.
Engineer James Eads tamed the mighty Mississippi, turning New Orleans into the second largest port in the nation.
The effort of pioneering researchers to conceive babies through in vitro fertilization.
Begun during the Civil War, the transcontinental railroad employed 20,000 men, mostly immigrants, who built the iron road with their bare hands.
Accounting for America's most famous inventor and his role in America's future.
Politics, culture, race relations, and technology in a year of change.