This Day in TechJuly 27, 1866: Trans-Atlantic Cable Connects Old World to NewAttack of the L.A. Smog ArchivesJuly 26, 1943: L.A. Gets First Big SmogJuly 23, 1996: Stand By ... High Definition TV Is on the AirJuly 22, 1933: Wiley Post Flies Around the World AloneJuly 21, 1911: Media Messenger McLuhan BornJuly 19, 1989: Human Heroics Overcome Aircraft Failure in Sioux CityJuly 16, 1965: Mont Blanc Tunnel OpensJuly 15, 1954: Boeing 707 Makes First FlightJuly 14, 1965: Mariner 4 Brings Mars Up Close and CardinalJuly 13, 1977: Massive Blackout Plunges New York Into RiotingJuly 12, 1960: Etch a Sketch? Let Us Draw You a PictureJuly 9–10, 1856: Visionary Tesla Born at MidnightJuly 8, 1947: Roswell Incident Launches UFO ControversyJuly 7, 1550: Europeans Discover ChocolateJuly 6, 1920: Pilots Navigate Using AM RadioJuly 1, 1910: Give Us This Day Our Automated BreadJune 30, 1908: A Very Close Encounter of the Second KindJune 29, 1956: Ike Signs Interstate Highway ActJune 28, 1846: Parisian Inventor Patents SaxophoneJune 25, 1967: First CES Dazzles New YorkJune 24, 1812: Coal-Powered Locomotive Hauls CoalJune 23, 1912: Computer Pioneer Alan Turing BornJune 22, 1783: Icelandic Volcano Disrupts Europe's EconomyMore Stories