Young inventor Emily Cummins came up with this ingenious low-tech solar fridge which works through water evaporation when she was just 21. Two years later she now regularly travels to Africa to give away the design to any community that can benefit. It’s cheap to make, effective (cooling down to 6 degrees in the middle of a hot day) and portable. Just awesome. More on her site. The outer shell of the device can be made with whatever materials may be…
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