Economist: IN SCIENCE, more information is supposed to lead to better conclusions and greater consensus. The Intergovernmental Panel on Climate Change (IPCC), which published its latest report on March 31st, certainly has more information. The new study synthesises 73,000 published works (a quarter of them in Chinese). This represents a 100-fold increase in about 30 years. But consensus remains elusive. Richard Tol of Sussex University, in Britain, disparagingly appraised the report’s conclusions as “the four…

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