Arctic methane breach an ‘economic time bomb’

PARIS: Massive leakage of methane from thawing shoreline in the Arctic would devastate the world’s climate and economy, a trio of scientists warned on Wednesday (Thursday in Manila).

Billions of tonnes of this potent greenhouse gas are locked in the shallow frozen shelf of the Arctic Ocean, which warms when summer sea ice retreats as a result of the greenhouse-gas effect, they said in a contribution to Nature.