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.
While the U.N. debated strategies for control of atomic energy, the U.S. Navy was preparing for nuclear tests on Bikini Island.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
The Alaskan Highway stands today as one of the boldest homeland security initiatives ever undertaken.
The first around-the-world air race was sponsored to prove that the airplane had a commercial future.
A uniquely impressionistic history of the early years of the Space Race.
In 1960, Francis Gary Powers' U-2 spy plane was shot down over the Soviet Union.
Postwar New York City and the global economic order told through the story of the World Trade Center.
During World War II, more than a thousand women signed up to fly with the U.S. military as WASPS.