National Geographic |
No Electricity? A Low-Tech System Keeps Things Chilled
National Geographic Abba's low-tech refrigeration system keeps perishable foods cool by placing wet sand between two pots. Photograph by Tomas Bertelsen, Rolex Awards. Abba, a college lecturer who came from a family of clay-pot makers, saw an opportunity to raise living ... |
Wednesday, 7 December 2016
No Electricity? A Low-Tech System Keeps Things Chilled - National Geographic
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