My main concern is reaching the tipping point of the completion of the Arctic Tundra positive feedback loop of self-sustained releases. The start of the tipping point was hit in 2009, with completion less than 20 years later. A group of scientists became the Arctic Methane Emergency Group.
Time is running out on climate denial
Posted on 30 December 2014 by dana1981
"From a strictly logical perspective, it’s hard to understand how we can be doing so little to slow global warming. Greg Craven summarized why by examining the extreme possible outcomes in his viral climate ‘decision grid’ video."
http://www.skepticalscience.com/time-ru ... enial.htmlThe problem is that video was 2007. It is worse now. It is improbable that people will reduce emissions even close to 90% of 1998 level, unless they are hit by due geologic and financial events which start a population crash in time. Otherwise the only way to save the biosphere then will be to cause a super-volcanic eruption.