James Hansen coauthored a paper in 2013 calculating that the warming you get from burning every bit of fossil fuels is not 3 degrees, but more like 12. At thos

James Hansen coauthored a paper in 2013 calculating that the warming you get from burning every bit of fossil fuels is not 3 degrees, but more like 12. At those temperatures any human that doesn’t move to the polar regions will die of heatstroke, not to mention any economic effects.