Climate change models predict between a .1C and 5C change in temperature in the “high emissions” model.  That’s a disagreement factor of 50x.  They say 2C is the maximum tolerable.  I wonder how many hundred year periods in the past have had less than 2C variations over that period.  I would like to see us get independent of fossil fuels because fossil fuels can’t easy scale to the needs of our modern society and being dependent upon them constrains economic growth.