He only has a PHD in Economics and BS in Physics, from MIT I think. That’s all. In addition, his report was co-written by someone with a PHD in Physics.
In fact, the report is not so much original science as an assessment of the current scientific thinking and a warning that the IPCC 4th report, on which the EPA was relying was out of date and largely discredited.
Quite apart from its own intrinsic value, what this report categorically proves is that the EPA did not do any scientific due diligence whatsoever before coming out with a ruling affecting every individual in the country.
Winner of the Well Said award.