Fifty-nine percent of Sub-Saharan African urban populations live in informal settlements (UN-HABITAT 2019), expected to triple by 2050. Despite an increase in improved housing from 11% to 23% between 2000-2015, 53 million urban Africans were still living in unimproved housing in 2015, often in hazardous sites such as riparian corridors and on steep slopes (Shatterthwaite...Read More