He should, true. Although I pointed out that there are meteorologists and climate scientists who do not think that global warming is happening. I've talked to a couple of them, one at length. As for the published studies, we have to read them and draw our own conclusions, as best we can, just as we do with anything in life, as none of us can be experts in all fields, and as there is much disagreement, not to mention wrong conclusions, among experts.
A shame that "global warming" is more of a political than scientific issue.
Yes, this is sadly true.