A series of protests by anti-globalization activists against the World Trade Organization Ministerial Conference of 1999 in Seattle forced the cancellation of the opening ceremonies.
A meteorite crashed through a roof in Sylacauga, Alabama, and hit a sleeping woman in the first verified case of a human being injured by an extraterrestrial object.
English mathematician Alan Turing published the first details of the Turing machine (model pictured), an abstract device that can simulate the logic of any computer algorithm by manipulating symbols.