20th centuryAug. 11, 1978: First Atlantic Balloon Crossing Takes OffAug. 6, 1945: 'I Am Become Death, Destroyer of Worlds'Aug. 5, 1962: First Quasar DiscoveredAug. 4, 1922: For Whom the Bell Tolls NotAug. 3, 1977: The TRS-80 Is Bad, and That Ain't Trash TalkJuly 30, 1935: Penguins Invade Britain, Readers RejoiceJuly 29, 1958: Ike Inks Space Law, NASA Born in Wake of Russ MoonJuly 28, 1948: IG Farben Explosion Punctuates Nuremberg TrialAttack 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 8, 1947: Roswell Incident Launches UFO ControversyJuly 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 ActMore Stories