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John Kerry, United States Special Presidential Envoy for Climate grimaces during a press conference at the end of the COP26 U.N. Climate Summit in Glasgow, Scotland, Saturday, Nov. 13, 2021. Almost 200 nations have accepted a contentious climate compromise aimed at keeping a key global warming target alive, but it contained a last-minute change that watered down crucial language about coal. (AP Photo/Alberto Pezzali)