Independent (UK): Greenland’s ice sheet has melted faster previously thought, according to the results of a two-year study published by the US journal Science. Scientists reported that warmer than usual summers accelerated ice loss to 273 cubic kilometers (65 cubic miles) of a year between 2006 and 2008, amounting to a 0.75 millimeter (0.02 inch) rise in global sea levels per year, "It is clear from these results that mass loss from Greenland has been accelerating since the late 1990s and the …