Anyone who doubts that the green movement is morphing into a millenarian cult should take a close look at Greta Thunberg. This poor young woman increasingly looks and sounds like a cult member. The monotone voice. The look of apocalyptic dread in her eyes. The explicit talk of the coming great ‘fire’ that will punish us for our eco-sins. There is something chilling and positively pre-modern about Ms Thunberg. One can imagine her in a sparse wooden church in the Plymouth Colony in the 1600s warning parishioners of the hellfire that will rain upon them if they fail to give up their witches.