In the news today, covered by both the Economist and the New Scientist is the news that the climate is less sensitive to carbon dioxide than previously thought - this seems a good thing; of course it does in principle. This means that the IPCC's last estimate of climate sensitivity (which measures the amount of warming that can eventually be expected to follow a doubling in the atmospheric concentration of carbon dioxide) is now being revised to 1.7 to 2.6 degrees as opposed to 2.6 degrees. No doubt though, this could either be a blip or will be heavily contested but it provides healthy debate which is ultimately the purpose of science.
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