Editing 2009 (section)

=== December ===
* [[December 1]] – The [[Treaty of Lisbon]] comes into force.<ref>{{cite news|url=http://news.bbc.co.uk/2/hi/europe/8340664.stm|title=EU reform treaty passes last test|work=BBC News|date=November 3, 2009|access-date=August 23, 2010|archive-date=June 12, 2021|archive-url=https://web.archive.org/web/20210612121705/http://news.bbc.co.uk/2/hi/europe/8340664.stm|url-status=live}}</ref>
* [[December 5]] – [[Lame Horse fire|Fire at the Lame Horse nightclub]] in [[Perm, Russia|Perm]], [[Russia]] kills 156 people. The nightclub owner was sentenced to nearly ten years in prison.<ref>{{Cite news |date=2013-04-30 |title=Owner jailed over deadly 2009 Russia nightclub fire |url=https://www.bbc.com/news/world-europe-22350836 |access-date=2025-03-09 |work=BBC News |language=en-GB}}</ref>
* [[December 7]]–[[December 18|18]] – The [[United Nations Framework Convention on Climate Change|UNFCCC]]'s [[2009 United Nations Climate Change Conference]] is held in [[Copenhagen, Denmark]].<ref>{{cite web|url=http://www.cop15.dk/en|title=COP15, United Nations Climate Change Conference, Copenhagen 2009. Dates put back 1 week due to previous clash with Muslim period of Ramadan|publisher=Cop15.dk|access-date=August 23, 2010|archive-date=January 19, 2009|archive-url=https://web.archive.org/web/20090119150922/http://www.cop15.dk/en/|url-status=dead}}</ref>
* [[December 8]] – [[December 2009 Baghdad bombings|A series of attacks]] in [[Baghdad]], [[Iraq]] kill at least 127 people and injure at least 448 more.<ref>{{Cite news |last=Spencer |first=Richard |date=8 December 2009 |title=More than 120 killed in Baghdad bombings |url=https://www.telegraph.co.uk/news/worldnews/middleeast/iraq/6761792/More-than-120-killed-in-Baghdad-bombings.html |url-access=subscription |url-status=live |archive-url=https://ghostarchive.org/archive/20220111/https://www.telegraph.co.uk/news/worldnews/middleeast/iraq/6761792/More-than-120-killed-in-Baghdad-bombings.html |archive-date=January 11, 2022 |access-date=2017-01-14 |work=Telegraph.co.uk}}{{cbignore}}</ref>
* [[December 15]] – First flight of the [[Boeing 787 Dreamliner]].
* [[December 16]] – [[Astronomer]]s discover [[GJ 1214 b]], the first-known [[exoplanet]] on which [[Extraterrestrial liquid water|water]] could exist.<ref>{{cite news |date=December 17, 2009 |title=Waterworld planet six times the size of Earth discovered |newspaper=The Telegraph |location=London |url=https://www.telegraph.co.uk/science/space/6826763/Waterworld-planet-six-times-the-size-of-Earth-discovered.html |url-status=dead |access-date=August 23, 2010 |archive-url=https://web.archive.org/web/20100804171505/http://www.telegraph.co.uk/science/space/6826763/Waterworld-planet-six-times-the-size-of-Earth-discovered.html |archive-date=August 4, 2010}}</ref>
* [[December 25]] – A [[Umar Farouk Abdulmutallab|Nigerian terrorist]] plotted an attempted terrorist bombing of [[Northwest Airlines Flight 253]] en route from [[Amsterdam]] to [[Detroit]].<ref>{{Cite news|url=https://www.nytimes.com/2009/12/26/us/26plane.html|title=Terror Attempt Seen as Man Tries to Ignite Device on Jet|last1=O'Connor|first1=Anahad|date=2009-12-25|work=The New York Times|access-date=2019-12-25|last2=Schmitt|first2=Eric|language=en-US|issn=0362-4331|archive-date=April 29, 2011|archive-url=https://web.archive.org/web/20110429235953/http://www.nytimes.com/2009/12/26/us/26plane.html|url-status=live}}</ref>
* [[Tyler, the Creator|Ace, the Creator]] releases his debut mixtape [[Bastard (Tyler, the Creator album)|‘Bastard’]]