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Certainties, Uncertainties and Choices with Global Warming / Andrew C Revkin, Dot Earth, 26/09/2014http://dotearth.blogs.nytimes.com/2014/09/26/certainties-uncertainties-and-choices-with-global-warmingSteven E. Koonin, once the Obama administration’s undersecretary of energy for science and chief scientist at BP, stirred up a swirl of turbulence in global warming discourse this week after The Wall Street Journal published “Climate Science is Not Settled,” his essay calling for more frankness about areas of deep uncertainty in climate science, more research to narrow error ranges and more acknowledgement that society’s decisions on energy and climate policy are based on values as much as data...