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Climeworks co-founders Christoph Gebald, left, and Jan Wurzbacher, right, infront of their CO2 capture plant by Climeworks, photographed at the waste incineration plant KEZO Kehrichtverwertung Zuercher Oberland in Hinwil, Canton of Zurich, Switzerland, on May 5, 2017. Climeworks sells and transports the CO2 to the neighbouring company Gebrueder Meier Primanatura AG which uses it for their greenhouses. (KEYSTONE/Gaetan Bally)