World leaders from 60 countries are coming to United Nations headquarters in New York City next week to discuss how they will respond to the climate crisis caused by humanity’s insistence on making the combustion of fossil fuels the basis of civilization. Emmanuel Macron of France will be there. Boris Johnson of the UK will be there. Narendra Modi of India will be there. The speakers will outline “only the best plans, only the most committed leaders will be on the stage,” according to Luis Alfonso de Alba, the UN’s special envoy for the climate summit.