Sometimes what does not happen is even more important than what does happen. Read to the end to see why.
1580 Francis Drake returned from three-year circumnavigation. And without GPS.
1829 Scotland Yard founded to investigate crimes. The property had belonged to a Scot.
1913 Panama Canals locks began raising ships.
1960 First televised presidential debate in Chicago. Cool Jack versus intense Dick.
1983 Stanislav Petrov took time to think and then did not act. The bells rang, the buzzers buzzed, the lights flashed, the countdown voice droned minutes to impact, the computers calculated the death toll, and two hundred subordinates looked to Colonel Petrov to act. Details on Wikipedia.