@Revkin tweets related to: Grade, Joe, Nocera, Commentary, Hansen

Nocera wrote that he "wondered" whether "such apocalyptic pronouncements were the sort of statements a government scientist should be making." Nocera acknowledges that Hansen is a "crucial figure" in climate change science, but what we hear from him now are such things as "his broad, unscientific views on, say, the evils of oil companies."
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Failing grade for Joe Nocera's commentary on Hansen, climate & #Keystone from @praeburn in @ksjtracker http://t.co/nlj7ScFRdK

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