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Pot in pot refrigerator In 2001, Nigerian Mohammed Bah Abba won the 2001 Rolex Awards for Enterprise with his invention of a simple cooling system to preserve food in rural areas with no electricity. His solution was a Pot-in-Pot refrigerator, which relies on the concept of evaporative cooling. The system works by putting a smaller clay pot inside a larger one, separating the two by constantly moist sand. Evaporation causes a cooling effect in the inner pot.

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The National Center for Appropriate Technology (NCAT) is currently seeking non-profit organizations, schools and public agencies in Arkansas, Iowa, Pennsylvania, Montana and Texas to host Energy Corps AmeriCorps members for the 2012-2013 program year.

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from Walden Labs

15 Ancient House Designs That You Can Build Really Cheap (Potentially For Free)

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소외된 이들을 위한 착한 기술, 뭐가 있을까? [인포그래픽] #Appropriate Technology / #Infographic ⓒ 비주얼다이브 무단 복사·전재·재배포 금지

소외된 이들을 위한 착한 기술, 뭐가 있을까? [인포그래픽] #Appropriate Technology / #Infographic ⓒ 비주얼다이브 무단 복사·전재·재배포 금지

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