While the U.N. debated strategies for control of atomic energy, the U.S. Navy was preparing for nuclear tests on Bikini Island.
After 18 years of struggles, the Golden Gate Bridge opened on May 27, 1937.
The effort of pioneering researchers to conceive babies through in vitro fertilization.
Equipment failure, human error and bad luck led to the country's worst nuclear accident in 1979.
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.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.
The New Deal program CCC put three million young men to work in camps across America.
The Klondike Gold Rush in Canada's Yukon Territory saw 100,000 people make the treacherous journey in search of riches.