icon-clockTime to watch: 09:04Posted on September 23, 2014

Mohammed Bah Abba

Rolex Laureate, 2000

Nigerian teacher Mohammed Bah Abba was motivated by his concern for the rural poor and by his interest in indigenous African technology to seek a practical, local solution to these problems. His extremely simple and inexpensive earthenware "pot-in-pot" cooling device, based on a principle of physics already known in ancient Egypt, has revolutionized lives in this semi-desert area.

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