Warm Climates in Earth History, Brian T. Huber, Kenneth G. MacLeod, and Scott L. Wing (Editors), 2000, Cambridge University Press, 462 p., (Hardcover $115.00) ISBN: 0-521-64142-X.

It would be profoundly incorrect to assert that long-term episodes of past global warmth, whether driven by increased atmospheric “greenhouse” gas concentrations or not, represent analogs to the predicted future anthropogenically induced global warming. The rate and magnitude at which the present atmospheric composition is changing probably are significantly higher than any natural event, as presently known. It is also rather unlikely that most such rapid events, if they occurred, would be faithfully recorded...

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