While the U.N. debated strategies for control of atomic energy, the U.S. Navy was preparing for nuclear tests on Bikini Island, forcing residents to move away for more than 40 years.
Engineered by William Barclay Parsons, the 21-mile, four-track route of the New York City Subway was the largest public works project in history.
During World War II, more than a thousand women signed up to fly with the U.S. military as WASPS.
American comandante William Morgan went to Cuba to help Fidel Castro return the country to a democracy. Instead, four years later, he was executed.
Robert Moses fueled some of the most ambitious -- and controversial -- public works projects ever conceived.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
General Douglas MacArthur led American troops in World Wars I and II before being fired by President Harry Truman during the Korean War.
A brilliant scientist, Oppenheimer was tasked with the development of the atomic bomb during World War II.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.