World Had Sixth-Hottest Year on Record in 2013, UN Says
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Last year was the sixth-hottest since 1850, with temperatures indicating long-term warming of the planet, the World Meteorological Agency said.
Thirteen of the 14 hottest years since the instrumental record began have occurred this century, including 2010 and 2005, the two warmest, the WMO, a United Nations agency, said in an e-mailed statement. The other year in the ranking, 1998, was the third warmest.