North Korea North Korea calls for the end of hostilities with the United States and a nuclear free Korean Peninsula, to restart talks; in its annual New Year editorial.
Major depressive disorder A study suggests that teenagers who go to bed late are more likely to develop depression and to have suicidal thoughts.
Angra dos Reis At least 19 people are dead and five are injured as mudslide hits an island resort near Angra dos Reis, Ilha Grande. Large numbers also killed elsewhere in Brazil.
People's Republic of China China and the Association of Southeast Asian Nations (ASEAN) launch a Free Trade Area.
Russia Russians are surprised by a cartoon "gently lampooning" Dmitry Medvedev and Vladimir Putin who are portrayed dancing, singing and playing musical instruments.
2010 Lakki Marwat suicide bombing 2010 Lakki Marwat suicide bombing: At least 95 people are killed, more than 100 more are injured and 20 houses are destroyed after a suicide bomber blows himself up at a volleyball game in Lakki Marwat, northwest Pakistan.
FARC At least 18 FARC rebels are killed while celebrating the New Year in an air raid by the Colombian Air Force in the south of the country.