Hawk Interested to hear your take on 'CO2 is not a major factor in causing planetary warming, and that human-produced CO2 in particular is a very minor factor'. Is that because you don't believe humans have caused the rise in CO2? I ask because there have been some rather confusing assertions made about sources of CO2, and I've been trying to follow people's reasoning. Meanwhile I find myself agreeing with Sawzaw's comment about unintended consequences!
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