![The U.S. Department of Energy declassifies documents showing world's largest mercury pollution event in Oak Ridge, Tennessee (ultimately found to be 4.2 million pounds [1.9 kt]), in response to the Appalachian Observer's Freedom of Information Act request.](https://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Seal_of_the_Department_of_Energy.svg/330px-Seal_of_the_Department_of_Energy.svg.png)
Date: May 17, 1983
The Zapatista Army of National Liberation is founded in Mexico. Date: November 17, 1983 Read more on Wikipedia → 📅 Other events on November 17 📅 Events on this day in 1983 📅 On This Day (Today) More events from 1983Stern Publishes Hitler Diary Excerpts, Later Revealed Forgeries, April 28, 1983US Navy Strikes Syrian Missile…
The ARPANET officially changes to using TCP/IP, the Internet Protocol, effectively creating the Internet. Date: January 1, 1983 Read more on Wikipedia → 📅 Other events on January 1 📅 Events on this day in 1983 📅 On This Day (Today) More events from 1983M*A*S*H Final Episode Airs to 110 Million Viewers, February 28, 1983Soyuz…
Cold War: The command post exercise Able Archer 83 begins, eventually leading to the Soviet Union to place air units in East Germany and Poland on alert, for fear that NATO was preparing for war Date: November 7, 1983 Read more on Wikipedia → 📅 Other events on November 7 📅 Events on this day…
Harold Washington is elected as the first black mayor of Chicago. Date: April 12, 1983 Read more on Wikipedia → 📅 Other events on April 12 📅 Events on this day in 1983 📅 On This Day (Today) More events from 1983Space Shuttle Challenger Maiden Voyage on STS-6 April 4, 1983Ash Wednesday Bushfires Kill 75…
Sikorsky S-61 disaster: A helicopter crashes off the Isles of Scilly, causing 20 fatalities. Date: July 16, 1983 Read more on Wikipedia → 📅 Other events on July 16 📅 Events on this day in 1983 📅 On This Day (Today) More events from 1983Ameritech Launches First US Cellular Network in Chicago, October 13, 1983Moose…
Turkish Republic of Northern Cyprus declares independence; it is only recognized by Turkey. Date: November 15, 1983 Read more on Wikipedia → 📅 Other events on November 15 📅 Events on this day in 1983 📅 On This Day (Today) More events from 1983First Space Shuttle Spacewalk by Musgrave and Peterson, April 7, 1983Strategic Defense…