Makoko is the perfect nightmare for the Lagos government – a slum in full view spread out beneath the most traveled bridge in west Africa’s megalopolis. Yet this city on stilts, whose residents live under the constant threat of eviction, has much to teach. Officially, the floating Lagos slum of Makoko does not exist. It does not appear on any city planning documents or maps. But that is about to change, thanks to a team of local volunteers and South Africa-based NGO Code For Africa. Using geolocalising technology, they navigate ...