ice and sea
ShutterstockBeware of melting.

An almighty belch is building up deep in the belly of the Arctic, and it’s going to cost the world a pretty penny when it rips.

As the Arctic continues to melt, a 50-gigatonne reservoir of methane trapped in permafrost beneath the East Siberian Sea will be released — perhaps steadily over five decades or perhaps during one sudden grandfatherly burp — and that will cause an estimated $37 trillion to $60 trillion worth of damage. So say researchers in a commentary published Wednesday in the journal Nature.