Cop26 may involve dozens of world leaders, cost billions of pounds, generate reams of technical jargon and be billed as the last chance to prevent calamitous global heating, but at its simplest the climate conference in Glasgow is a debate about dialling... 

World leaders need to come up with much more than “hot air” at the United Nations’ Climate Change Conference (COP26) in November if the planet is to have any chance of cooling down, British Prime Minister Boris Johnson said on Thursday. COP26,...