The estimation of the pace of the progress of climate change has been systematically underestimated through the politics of how scientific consensus has been reached as explained in Gwyne Dyer's book "Climate Wars". I'm a control systems engineer and I understand the mathematical implications of the increasingly engaged positive feedback effects: ongoing disappearance of energy reflective ice and snow and ongoing melting of permafrost belching more and more methane into the atmosphere - as does the shale gas industry. It is like giving ever more vast momentum to an accelerating express train of consequence. We have no way of knowing if it isn't already too late to stop this thing.  I do agree nuclear power is very much key to making our best efforts to avoid consequences the potential scale of which are barely discussed. Look up Canfield oceans - we can't say for sure we aren't going to go there, but we desperately need to take whatever preventative action we can.