MIAMI, United States (AFP) — With sheet metal roofs, concrete floors, poor ventilation and spotty electricity, crowded urban slums in Africa can expect to get even hotter and deadlier due to global warming, US researchers said Monday. Scientists at Johns Hopkins University analyzed three informal settlements in Nairobi, including the largest, Kibera, home to nearly a million people. Along the settlements’ narrow alleyways, mud-walled homes and metal roofs, they found stifling temperatures, “between five and […]