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People walk past the International Congress Center during COP24, the U.N. climate change conference in Katowice, Poland, Dec. 3. (Sipa USA/NurPhoto/Mateusz Wlodarczyk)
People walk past the International Congress Center during COP24, the U.N. climate change conference in Katowice, Poland, Dec. 3. (Sipa USA/NurPhoto/Mateusz Wlodarczyk)