Not only is the fridge solar powered, it can also be built from household materials Read more: http://www.dailymail.co.uk/sciencetech/article-1108343/Amazing-solar-powered-fridge-invented-British-student-potting-shed-helps-poverty-stricken-Africans.html#ixzz2Eba9mhJe Follow us: @MailOnline on Twitter | DailyMail on Facebook
Take a smaller pot and put it inside of a larger pot. Fill the space in between them with wet sand, and cover the top with a wet cloth. When the water evaporates, it pulls the heat out with it, making the inside cold. It's a natural, cheap, easy to use and even portable refrigerator. So, instead of perishable foods rotting after only three days, they can last up to three weeks using this method.