A Push to Stop Crimes Against the Future - Dot Earth Blog - NYTimes.com

These include such actions as driving species to extinction and adding long-lived greenhouse gases to the atmosphere in ways that have few impacts now, but could disrupt climate patterns, ocean ecosystems and coastal settlements in decades to come.

BBC - Climate Change: The Blog of Bloom: Massive Estimates of Death are in vogue for Copenhagen

These are genuinely alarming, sit-up-and-pay attention sort of figures. The problem is that once you've sat up and paid attention enough to examine them a bit more closely, you find that they aren't very compelling.
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This is just a snapshot, but it's fairly representative. The report contains so many extrapolations derived from guesswork based on estimates inferred from unsuitable data sets that you have to ask some serious questions about the methodology.

Dalton Minimum Returns: Sun spots and temperature

It isn’t CO2 so it must be something else. I expect that it is some combination of SOI, solar wind, cosmic rays, UV, disturbances in the earth's magnetic field, relative humidity (propensity to form clouds), ocean turn-over and possibly things not yet discovered, all of which still needs to be sorted out. Since average global temperature is sensitive to clouds, I suspect that the combination acts as a catalyst for cloud formation which then drives average global temperature.