Arctic Thawing to Cost $60 Trillion | Zero Hedge - http://www.zerohedge.com/contributed/2013-07-27/arctic-thawin...
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"Scientists and economic analysts (Polar Ocean Physics Group at the University of Cambridge) say that the thawing of the Arctic will set off what they have termed an “economic time bomb” in years to come, incurring costs to the value of trillions of dollars." · silpol

The number does not seem based on anything. · 9000

These people seem to say something more substantial about dangers of melted Arctic: http://www.guardian.co.uk/environment/earth-insight/2013/may/... · 9000

^ thanks · silpol