Love your category ;-) Only quickscanning abstract... p 46 ? looks like the graph... In the early 80's I read about temps being usually lower on earth and mankind having "better time" im the areas where temp was much higher than earth norm, so trying to spruce up temp for the returning via CO2 ice ages might be a good thing. Looking at the trends/cycles of typical factors before our times (mostly sun, meteors, volcanos and atmospheric change by vegetation and bateria) that sounded not too far off. Personally I am guessing that mankind is a heating, not a cooling factor, but doubt that much of actual temperature is influenced by CO2.
