Global impact of melting Arctic estimated to cost over $60 trillion User tepidwaters, in the Reddit Science subreddit, 25 Jul 2013
The Nature article that sparked the shorter newspaper articles User jensbackvall, in the Environmental Science subreddit, 25 Jul 2013
Giant methane bubble in Arctic could push global warming forward by 35 years, raise Earth's temp by 1.3 ˚C and could pop "at any time," scientists warn User Sach125, in the Reddit Science subreddit, 25 Jul 2013
Nature: melting permafrost will release 50 gigatonnes of methane, which could accelerate global warming by 15-35 years User grandpa, in the Reddit Science subreddit, 25 Jul 2013