Optimistic Energy Source Use Projection prepared by Agelbert Five Years Ago:
Agelbert Mea Culpa: The ice free summer did not occur in 2017. It seems that will occur a few years later than my original estimates.
Despite the lack of an ice free summer in 2017 (or 2018) to spur the governments of the world to mitigate global warming, I am heartened by the increasing pressure from the IPCC, which is finally getting real about how dire the Catastrophic Climate Change threat is, and how urgent it is to to GTF off of Hydrocarbons for energy by transitioning to 100% Renewable Energy.
If, and that is a mighty big if, the goverments of the world manage to follow the transition timeline on this graphic I prepared in 2013, humanity might just get through this.

On the other hand, if they keep doing the bidding of the
Hydrocarbon Hellspawn 
, we are done.