20th centuryApril 18, 1906: Mother Nature 1, San Francisco 0April 14, 1945: Tweaky Toilet Costs Skipper His SubApril 13, 1953: Bond Starts Shaking Things Up, Stirring His FansApril 12, 1961: Soviets Orbit Gagarin, First Human in SpaceApril 11, 1984: Shuttle Makes House Call, Repairs SatelliteApril 7, 1964: IBM Bets Big on System/360April 6, 1938: Teflon, an Invention That SticksApril 5, 1951: Happy Birthday, Mr. Pied Piper of TechnologyApril 4, 1975: Bill Gates, Paul Allen Form a Little PartnershipMarch 31, 1999: The Matrix Hooks UsMarch 29, 1941: Radio Stations Shuffle Frequencies on 'Moving Day'March 28, 1979: Reactor Meltdown at Three Mile IslandMarch 25, 1916: Ishi Dies, a World EndsMarch 24, 1989: Valdez Spill Causes Environmental CatastropheMarch 23, 1989: Cold Fusion Gets Cold ShoulderMarch 18, 1931: The Schick Hits the FansMarch 17, 1948: William Gibson, Father of CyberspaceMarch 16, 1926: Goddard Launches RocketryMarch 11, 1986: NFL Adopts Instant ReplayMarch 9, 1945: Burning the Heart Out of the EnemyMarch 8, 1918: Killer InfluenzaMarch 4, 1962: Nuclear Age Comes to AntarcticaMarch 3, 1919: U.S. Starts International Airmail ServiceFeb. 28, 1935: Sheer BlissMore Stories