Sub-Saharan Africa: Roll out the barrel
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Timbuktu Chronicles profiles a low-tech innovation that could help many poor families who lack easy access to clean water–the Hippo Roller.
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Timbuktu Chronicles profiles a low-tech innovation that could help many poor families who lack easy access to clean water–the Hippo Roller.
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Scary! Word is also out on Weibo that Nanjing is still using its 1987 standard...