Guardian: New research has revealed that melt-water pooling on the Arctic ice is causing it to melt at a faster rate than computer models had previously predicted. Scientists have been struggling to understand why the northern ice sheet has been retreating at a faster rate than estimated by the most recent assessment of the Intergovernmental Panel on Climate Change (IPCC), in 2007. The IPCC’s computer models had simulated an average loss of 2.5% in sea ice extent per decade from 1953 to …