Finbarr O'Reilly/Reuters
Over the last 15 years, 68 million people gained access to improved sanitation in urban areas in sub-Saharan Africa. This is a big achievement. But in the same period the urban population...
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Over the last 15 years, 68 million people gained access to improved sanitation in urban areas in sub-Saharan Africa. This is a big achievement. But in the same period the urban population...
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