A Matter of Degrees

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Hansen seems to take his cue from Six Degrees: Our Future on a Hotter Planet, in which Mark Lynas likens global warming to a descent into Dante’s Inferno. This Sunday, Lynas’ hellish vision is due to collide with the popular imagination on TV, amplified not by climate models, but the raw semiotic power of computer generated special effects. We will have to see what The National Geographic Channel unleashes, but judging from Lynas’ publicity website, which shows the dome of London’s St. Paul’s Cathedral awash in a rising sea, expect something in the middle ground between An Inconvenient Truth, and Planet of the Apes. The National Geographic Website is forthrightly hyperbolic: “The difference between the world we know and something out of a disaster movie is only a matter of degrees.