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For most of Earth's history, the CO2 levels have been appreciably higher (much higher in most cases) than what they've been for the last 2.5 million years. How do you account for a CO2 level of 600-800ppm for most of the Tertiary/Quaternary Periods, and a high of 1200-1250ppm for the Palaeocene/Eocene epochs.
Carl, what will happen if CO2 levels go back up to 600ppm plus?
Peter, is the official climate science as unreliable as financial forecasts?
Last edited by glenc; 17-12-2009 at 04:14 PM.
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