Climate modeling is far from a precise science. The last decade of global temperatures (from about January 1999 onward) reveals little to no warming. This runs contrary to the estimates of most runs of climate models – though similar periods without warming do occur in a small portion of climate model runs, which include a statistically random element to account for typical small-scale variability. While a decade is a relatively small period in climate time-scales, this too points to the need to continue to research climate drivers. We need to continue to discuss appropriate responses to climate change, but it is inappropriate to claim that the science is settled and all the facts are in. Estimates of the costs of climate change are even more uncertain – making it difficult to make reasonable decisions on the basis of these cost projections. The dialogue over climate change policy should continue, with an open acknowledgement that there are still many uncertainties in our understanding.