The recent United Nations Climate Change Conference (Cop26) in Glasgow was, it seems, a historic success. We have this on no lesser authority than that of the UK prime minister, Boris Johnson, who happened to be the meeting’s host. The Cop26 president, Alok Sharma, also was upbeat afterward regarding the 2015 Paris climate agreement’s target of limiting global warming to 1.5C above pre-industrial levels. “We set out by saying we wanted to keep 1.5C within reach,” Sharma said. “We did do that.” And Johnson claimed that there was little difference between the proposed Cop26 agreement to “phase out” coal usage and the final text, which pledged only to “phase down” coal.
Others took a different view. Perhaps predictably, the teenage Swedish
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