A quick summary from Wikipedia, to catch up.
- January 3–10 – Israel and Syria hold inconclusive peace talks.
- January 4 – Alan Greenspan is nominated for a fourth term as U.S. Federal Reserve Chairman.
- January 5–8 – The 2000 al-Qaeda Summit of several high-level al-Qaeda members (including 2 9/11 American Airlines hijackers) is held in Kuala Lumpur, Malaysia.
- January 6 The last natural pyrenean ibex is found dead apparently killed by a falling tree.
- January 10 – America Online announces an agreement to purchase Time Warner for $162 billion (the largest-ever corporate merger).
- January 11 – The armed wing of the Islamic Salvation Front concludes its negotiations with the government for an amnesty and disbands in Algeria (see Algerian Civil War#GIA destroyed, GSPC discontinues)
- January 11 – The trawler Solway Harvester sinks off the Isle of Man.[3]
- January 12 – 9/11 hijackers Mohammed Atta and Ziad Jarrah read their wills in the Martyrdom Video.
- January 14 – A United Nations tribunal sentences 5 Bosnian Croats to up to 25 years in prison for the 1993 killing of over 100 Bosnian Muslims in a Bosnian village.[4]
- January 14 – The Dow Jones Industrial Average closes at 11,722.98 (at the peak of the Dot-com bubble).
- January 16 – In Sacramento, California, a commercial truck carrying evaporated milk is driven into the State Capitol building, killing the driver.
- January 18 – The Tagish Lake meteorite impacts the Earth.
- January 24 – God's Army, a Karen militia group led by twins Johnny and Luther Htoo, takes 700 hostages at a Thai hospital near the Burmese border.
- January 26 – The rap-metal band Rage Against the Machine plays in front of Wall Street, prompting an early closing of trading due to the crowds.
- January 30 – Super Bowl XXXIV: The St. Louis Rams win the NFL Championship for the first time since 1951, defeating the Tennessee Titans 23–16.
- January 30 – Kenya Airways Flight 431 crashes off the coast of Côte d'Ivoire into the Atlantic Ocean, killing 169.
- January 31 – Alaska Airlines Flight 261 crashes off the California coast into the Pacific Ocean, killing 88.
- January 31 – Dr. Harold Shipman is found guilty of murdering 15 patients between 1995 and 1998 and sentenced to life imprisonment.
- January 1 – Spain takes over the Presidency of the Council of the European Union from Sweden.
- January 1 – A suicide bombing occurs at a volleyball game in northwestern Pakistan, killing at least 95, and injuring over 100.
- January 4 – The tallest-to-date man-made structure, the Burj Khalifa in Dubai, United Arab Emirates, is officially opened.
- January 8 – The Togo national football team is involved in an attack in Angola, and as a result withdraws from the 2010 Africa Cup of Nations.
- January 12 – A 7.0-magnitude earthquake occurs in Haiti, devastating the nation's capital, Port-au-Prince.[2][3][4]
- January 15 – The longest annular solar eclipse of the 3rd millennium occurs.
- January 21 – Toyota recalls over 1.5 million cars because of a faulty accelerator pedal.
