Wunder Blog : Weather Underground:
"Arctic sea ice loss appears to have created a new atmospheric circulation pattern that brings more warm air in the Arctic, creating a positive feedback loop that causes even more sea ice loss. This feedback loop increases the likelihood that an ice-free Arctic in the summer will indeed come by 2030, as many Arctic experts are predicting. It's worth noting that such an atmospheric circulation shift was not predicted by the climate models. Indeed, the loss of Arctic sea ice over the past three years exceeds what any of our models were predicting (Figure 4). While we can rightly criticize these models for their inaccuracy, we should realize that they are just as capable of making errors not in our favor as they are of making errors in our favor."

But this is a major point that "climate deniers", as anyone who questions Al Gore are being so called, point out: a lot of the dire predictions of disaster are based upon models that by definition are incomplete. The arguments to "go green" should be based upon the obvious reasons: oil is finite, conservation saves and makes money. Companies are coming to that conclusion so stop with all the predictions of disaster.