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.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The story of the polio crusade pays tribute to a time when Americans banded together to conquer a terrible disease.
The impact of tuberculosis in America, once the deadliest killer in human history.
Equipment failure, human error and bad luck led to the country's worst nuclear accident in 1979.
The remarkable story of mid-19th century ingenuity and perseverance during the laying of the transatlantic telegraph cable between North America and Europe.
Robert Noyce's invention of the microchip launched the world into the Information Age.
The story behind the development of the oral contraceptive that put women in control of birth control.
During World War II, more than a thousand women signed up to fly with the U.S. military as WASPS.