No, he doesn’t deny the warming. He believes the warming is cyclical, just where we are in a few hundred thousand or more years of glacial cycles. He also explains the science of why the warming cannot be caused by elevated CO2 levels. He’s not a kook - he worked in the field for many years in government and graduated from a distinguished program.
I did not mean to imply he was a kook - I asked because I was looking for such an informative source and I thank you for informing me about it. You did me a great favor.