Reply #5: They're now projecting no summer Arctic sea ice by 2013

[hatrack]

It's moving far faster than they even thought possible, even two or three years ago. James Hansen from Goddard said it best:

"For the last decade or longer, as it appeared that climate change may be underway in the Arctic, the question was repeatedly asked: 'is the change in the Arctic a result of human-made climate forcings?' The scientific response was, if we might paraphrase, 'we are not sure, we are not sure, we are not sure…yup, there is climate change due to humans, and it is too late to prevent loss of all sea ice.' If this is the best that we can do as a scientific community, perhaps we should be farming or doing something else" Hansen and Sato, 2007b).

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