Clathrate Gun has
The best estimate of the time that methane eruption in the Arctic will produce a mean atmospheric temperature of 8°C leading to total global deglaciation and the major extinction of all life on Earth (IPCC, 2007) is 2050.6 +- 3.4 (N=8) with a total range from 2042.2 to 2052.8 (Figures 1 and 2, Tables 1a - 1d, Table 2).
Amazing! Check out the power points!... These people need to get out more...