Nearly one million people protested for the disarmament of nuclear weapons in Central Park, New York City.
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The Rapid Transit Railroad broke ground on a new underground subway to link Manhattan and Brooklyn.
British Prime Minister Winston Churchill went public that Britain had its first atomic bomb and planned to test it in Australia by the end of the year.
Edith Eleanor McLean became the first baby ever to use an incubator.
The first photo of the moon was taken by John Draper in New York City.
Walt Disney released their second feature-length movie, 'Pinocchio,' in New York City.
