Colombian drug lord Pablo Escobar was shot and killed in Medellín.
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The first artificial heart was successfully implanted.
The world's first self-sustaining nuclear chain reaction happened in Chicago Pile-1 at the University of Chicago. It was overseen by Enrico Fermi.
Cobb, a film about the baseball player Ty Cobb and starring Tommy Lee Jones premiered.
Sweden introduced a groundbreaking Freedom of Press Act, becoming the first nation to introduce freedom of speech.
Paleoanthropologist Louis Leakey discovered a 1.4 million-year-old Homo erectus in Olduvai Gorge, Tanzania.
