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One more thing. Freeman Dyson doesn't actually deny climate change - he certainly doesn't deny that increasing CO2 will increase temperatures. What he says is that the models whilst working well for the atmosphere and oceans are poor in regards to the biosphere. In that he isn't far off the mark, I can give you one example from my own work and that is that the temperature response of plant respiration is generally poorly modelled (I have peer reviewed publications in this area).
What he suggests is that as we don't understand the biosphere all that well it could be that by changing land management we can suck all that CO2 up into the soil. he shows insight in understanding that it is the soil not the vegetation that is important here and it is possible that this could be the case. However, almost all the experiments in this area have little had success and it seems very unlikely that we can shift the CO2 into soil carbon on a timescale that is helpful to us. In fact, generally we are releasing CO2 from the soil due to our land management and of course there is the risk that melting tundra permafrost will make this vastly worse. It should always be bourne in mind that in the last 150 years we have released the CO2 fixed by plants over several millions of years and that those millions of years were more inducive to plant growth than the current climate.
In all, I am not sure Freeman Dyson would enjoy your portrayal of his views.
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