Researchers ran computer simulations that take into account environmental variability and geographical setting to investigate how early explorers made it to these tiny, remote islands in the Pacific.
The world's informal settlements are growing at an unprecedented rate, with about one in four urban dwellers living in slums. We need to rethink how we view and deal with these people and places.
The dismally slow provision of housing in South Africa is such that more than 2.2 million households live in 2700 informal settlements. Waiting is the norm and can take years, even decades.