re: "You wacko righties insist it is not"
I'm sure you don't mean ME - since I insist nothing of the sort. I only want the topic to be thoroughly scrutinized and understood before I'll draw a conclusion. You provided a valid answer to one of forty-six questions I posted. The vast majority remain.
And those aren't the only questions. As you saw, your answer led to at least one NEW question - as to the non-linear heat retention abilities of CO2 as an environment is saturated with it. It seems that CO2 is a dramatically less efficient heat store once the atmosphere has a mere 20ppm of it.
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