Comment Re:Did it "confirm" it was caused by man? (Score 5, Insightful) 967
The Economist estimates 2% of global GDP to meaningfully cut emissions. (By comparison, the recent round of bank rescues cost about 5%)
Nobody know what the cost of adjusting is, because we don't know what scale of the change will be. If the changes are less than 2 degrees, that's likely to be tolerable. ON the other hand, some of the worst case predictions are very, very bad for human civilisation.
This uncertainty is being used to encourage inaction when the opposite is true: any sensible approach to risk management would suggests taking reasonable action to avoid it.