Phrenology had the same sort of widely touted “scientific consensus” two hundred years ago that Global Warming does today, the same sneering certainties on the part of the unqualified, the same rush of enthusiasm, the same celebrity practitioners. I do not think history will be any kinder to the AGW crowd than it has been to people who thought they could tell your character from the bumps on your head.
Don’t forget astrology and alchemy.