ADAM HART-DAVIS / SCIENCE PHOTO LIBRARY ADAM HART-DAVIS / SCIENCE PHOTO LIBRARY
Slum housing. Family standing by a waste drainage ditch in a slum. Lack of proper sanitation can cause disease in slums where waste is not removed. This is Kiandi, part of Kibera slum in Nairobi, Kenya. The Kibera slum occupies a few square kilometres, and is home to some 700,000 people, some living ten to a room. A quarter of Nairobi's population live in this slum. Photographed in January 2006.
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