I agree that this morning we simply can't cook up a target for the 2020s, or any target. We will need to do much more research to determine what is achievable. But in setting those targets, we also have to analyze the cost of delaying emissions until a certain date, because as I said in my presentation, the increase in temperature lags decades behind the emission of greenhouse gases. Today we are determining the climate of the 2040s and 2050s, and we have to take into account the damage that is being caused as we delay efforts to reduce greenhouse gases.
On November 21st, 2006. See this statement in context.