So, to sum up: (1) estimates of climate sensitivity suggest that global warming is likely to be milder than even the lowest forecast made by the Interagency Working Group; (2) humanity’s ability to adapt to climate change will almost certainly be greater than even the most optimistic forecasts of the Interagency Working Group; (3) while there will undoubtedly be losers from global warming, there will also be winners and it is quite possible that additional carbon dioxide emissions will generate net benefits for humanity, at least until the end of this century.