Quark Soup by David Appell: Nocera, Hansen, Pipelines and Activism
And if any scientist in the world has the right to be speak out on this issue, surely it is James Hansen. He's been working to understand all this since forever, and has forgotten more than Nocera will ever know on the subject. (Same goes for those ex- NASA employees, who may have walked on the moon but don't seem to know the science yes I'm talking about you Harrison Schmidt.)
So in a way, James Hansen can't win. I (strongly) suspect that the future will unanimously see him as prescient, correct and even courageous, and they will probably wonder what all the controversy was about anyway, much like we have a difficult time understanding how anyone back when could advocate for slavery or smoking, and until Joe Nocera knows what James Hansen does and can do as good a job explaining it all, Hansen should just ignore him. Which can't be easy, but he should.