Joe Biden slipped while playing with his dog, Major, and was left with hairline fractures in his foot.
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Pong was released. It was the first commercially successful video game.
Thomas Edison demonstrated his hand-cranked phonograph for the first time.
A 7.4 magnitude earthquake struck Hawaii.
Amateur British chemist Sir James Jay invented invisible ink.
Enos, the chimpanzee, was launched into space on the Mercury-Atlas 5 Mission.
