To save me the trouble of going through all the links generously provided can some-one please provide a link to where the scientists have correlated their modeling with data going back a very long time. Being scientists they would naturally see how good their model is in predicting temperatures in the past. A simple graph of actual vs predicted for a simple person. And I expect the usual error bars on the actual data.
I haven't seen anything like that, surprisingly, as I'd expect it to be an inherent part of validating the models.
Of course, as some-one pointed out, that has nought to do with this thread on the carbon tax.
THE Labor Party thinks that the Greens are "extremists" and "loonies". The Greens think that the Labor Party "doesn't stand for anything" and are "diseased".
pretty much sums up why there is this tax.