He's made this case before. He's been disowned by the environazis because what he's saying is heretical.
Is he the same guy who refuted the rainforest is disappearing crowd?
He only partially understood the foals. Global warming is a device to shut down technology and return the world to a sort of feudal state with the Elite owning everything including the bulk of the remaining population who will have just enough to survive as serfs who produce the wealth the elite command.