While models plod, nature sprints

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It used to be that climate scientists worried about how to make the public care about changes that might not happen for a century. Today they have a bigger problem: some of the changes arenโ€™t waiting around that long.

Stefan Rahmstorf, a climatologist at Potsdam University, points out that models tend to underestimate sea level rise, too. โ€œAs climatologists, weโ€™re often under fire because of our pessimistic message, and weโ€™re accused of overestimating the problem,โ€ he says. โ€œBut I think the evidence points to the oppositeโ€”we may have been underestimatingย it.โ€

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