The authors say that the predicted shallow depth of these methane reserves means that they could be destabilised by climate change, and might act as a positive feedback on global warming.

BBC: Antarctic may host methane stores

Many who accept that mankind is changing the climate disagree on how much and how quickly things will change projections into the future rely on models whose feedback loops are constantly being refined, and which are the source of much debate.

ECONOMIST: Leaked e-mails do not show climate scientists at their best