FILE - Residents cross flooded fields following Cyclone Enawo in Madagascar's capital Antananarivo, on March 9, 2017. Africa has contributed relatively little to the planet's greenhouse gas emissions but has suffered some of the heaviest impacts of climate change and the reverberations of human-caused global warming will only get worse, according to a new United Nations report released Feb. 28, 2022. (AP Photo/Alexander Joe, File)