The finding does not change our understanding of the warming power of carbon dioxide. In fact, it shows that human CO2 emissions have interrupted a long cooling period that would ultimately have delivered the next ice age.
But others have doubts. Mann argues that Esper's tree-ring measurements come from high latitudes and reflect only summer temperatures. "The implications of this study are vastly overstated by the authors," he says.
http://www.newscientist.com/article/mg2 ... lause.html
http://www.newscientist.com/article/mg2 ... adapt.html
http://thinkprogress.org/climate/2012/0 ... ?mobile=nc
http://www.wwf.gr/images/pdfs/LPR-2012.pdf
“It may seem impossible to imagine that a technologically advanced society could choose, in essence, to destroy itself, but that is what we are now in the process of doing.”
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