Global Price Tag for Arctic Thawing: $60 Trillion

The Arctic's rapid warming could cost the global economy more than $60 trillion if melting permafrost releases huge quantities of methane, a potent greenhouse gas, a new study finds. The cost nearly mirrors the $70 trillion size of the world economy in 2012.

http://weather.yahoo.com/global-price-tag-arctic-thawing-60-trillion-184127580.html