Reuters: This year is likely to be the fifth warmest on record and the first decade of this century the hottest since records began, the World Meteorological Organization said on Tuesday. Speaking on the sidelines of a U.N. climate conference in Copenhagen, WMO head Michel Jarraud pointed to extreme hotspots this year — Australia had its third warmest year since record dating began in 1850, "with three exceptional heatwaves." "I could go on. There was the worst drought in five decades …