Courier-Mail: THE world has had its coolest year of this millennium in 2008 but global warming sceptics should put the champagne on a dwindling supply of ice. Despite a drop in the mercury, 2008 still remained in the top 10 hottest years on record since global data keeping began in 1850. There is also less ice on the planet than ever before. In 2008, the planet was a third of a degree hotter than average; a trend, say experts from the World Meteorological Organisation, that is …