September 27, 2012
Arctic Melt Signals Catastrophe
John Gibbons, Irish Times
The last time the Arctic is believed to have been ice free is during the Eemian period, about 125,000 years ago, when global sea levels were between four and six metres higher than today. However, current atmospheric CO2 levels are already far higher than during the Eemian; indeed, you would have to go back several million years to find any era in the Earth’s history to match today’s levels of this powerful heat-trapping “greenhouse gas”.
TAGGED: Climate Change, Arctic