Robert Moses fueled some of the most ambitious -- and controversial -- public works projects ever conceived.
When two passenger ships collide off Nantucket in 1909, 1,500 people rely on 26-year-old Jack Binns to operate a new technology - wireless telegraphy - to save them all.
The remarkable story of how a railroad was built connecting California to the East.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.
At the height of segregation, an unlikely alliance between a black medical genius and a white surgeon led to a pioneering medical breakthrough.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
In 1960, Francis Gary Powers' U-2 spy plane was shot down over the Soviet Union.
The international race to develop biological weapons during the 20th century.