Arctic methane release could cost economy $60 trillion -study

* Reservoir of methane under East Siberian Sea* Release could accelerate ice melting, global warming* Risks include extreme weather, poorer health, lower crop outputBy Nina ChestneyLONDON, July 24 (Reuters) – A release of methane in the Arctic could speed the melting of sea ice and climate...Arctic methane release could cost economy $60 trillion -study