In this photo taken Thursday, Oct. 19, 2017, a man walks through a greenhouse at a learning center where sustainable agriculture techniques such as drought-resistant crops and tree planting are taught, funded by the German government-backed GIZ development agency, in the semi-arid savannah region of Karamoja, in northeastern Uganda. As international leaders meet in Germany for the first major global climate conference since President Donald Trump announced that the U.S. will pull out of the 2015 Paris accord, many in Africa fear they will be harder-hit than most and in Uganda's poorest region Karamoja, the changing climate has brought hunger and bewilderment as traditional coping methods fail. (AP Photo/Adelle Kalakouti)

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