A very disturbing report from Australia. Page 5, if the math is correct, for any one of the curves spells disaster. Geometric progressions increase very rapidly after the first three or four doublings. http://www.countercurrents.org/glikson290511.pdf Had the proposed Australian reduction of 5 percent in the rate of carbon emissions by 2020 relative to 2000  been a figure adopted world-side, global emissions would be reduced from ~24,000 million tons/year to 22,500 million tons/year, hardly causing a dent in the current trajectory above 393 ppm CO2 toward levels at which the polar ice sheets are further destabilized (Figure 3). It is not clear whether deep reduction in carbon emissions will be sufficient to stem the amplifying feedbacks associated with greenhouse gas warming and ice/melt water interactions. Barring an indefinite maintenance of sulphur aerosol emissions, deep emission cuts need to be accompanied by atmospheric CO2 draw-down by means of fast-track tree planting, application of biochar methods and chemical CO2 sequestration. As shown by the intensifying spate of extreme weather events around the globe (Figure 7) the alternative bears no contemplation.