He actually nails a lot of it, and wraps it up into a tidy package:
I am skeptical humans are the main cause of climate change and that it will be catastrophic in the near future. There is no scientific proof of this hypothesis, yet we are told “the debate is over” and “the science is settled.”
My skepticism begins with the believers’ certainty they can predict the global climate with a computer model. The entire basis for the doomsday climate change scenario is the hypothesis increased atmospheric carbon dioxide due to fossil fuel emissions will heat the Earth to unlivable temperatures.
He also dismantles the IPCC fraud, noting that its mandate is to find human causes of climate change; if they can't do that, then their existence is meaningless.