French scientists Pierre and Marie Curie discovered radium.
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Elvis Presley met President Richard Nixon in the White House.
The first manned Moon voyage, the Apollo 8, launched with Frank Borman, Jim Lovell, and William Anders.
Elton John and his partner David Furnish registered their civil partnership at Windsor Town Hall on the first day civil partnerships could legally be performed in England.
The first crossword puzzle was printed.
The first feature-length silent film comedy, 'Tillie's Punctured Romance,' was released, starring Marie Dressler, Mabel Normand, and Charlie Chaplin.