2006: NASA reveals photographs taken by Mars Global Surveyor suggesting the presence of liquid water on Mars.
2005: An Iranian Air Force C-130 military transport aircraft crashes into a ten-floor apartment building in a residential area of Tehran, killing all 84 on board and 44 more on the ground.
1982: The Troubles: The Irish National Liberation Army bombed a pub frequented by British soldiers in Ballykelly, Northern Ireland, killing eleven soldiers and six civilians.
1977: South Africa grants independence to Bophuthatswana, although it is not recognized by any other country.
1975: The Troubles: Fleeing from the police, a Provisional IRA unit takes a British couple hostage in their flat on Balcombe Street, London, beginning a six-day siege.
1941: World War II: The United Kingdom and Canada declare war on Finland in support of the Soviet Union during the Continuation War. Camp X opens in Canada to begin training Allied Secret Agents for the War.
1928: The government of Colombia sends military forces to suppress a month-long strike by United Fruit Company workers, resulting in an unknown number of deaths.
1922: One year to the day after the signing of the Anglo-Irish Treaty, the Irish Free State comes into existence.
1917: World War I: USS Jacob Jones is the first American destroyer to be sunk by enemy action when it is torpedoed by German submarine SM U-53.
1917: Halifax Explosion: A munitions explosion near Halifax, Nova Scotia kills more than 1,900 people in the largest artificial explosion up to that time.
1904: Theodore Roosevelt articulated his "Corollary" to the Monroe Doctrine, stating that the U.S. would intervene in the Western Hemisphere should Latin American governments prove incapable or unstable.
1897: London becomes the world's first city to host licensed taxicabs.