The power-free refrigerator09/12/2016September 12, 2016Lack of electricity means that 75 percent of medicines and vaccines, which need cool storage, are damaged due to immoderate temperatures. The Coolar refrigerator, which works with solar heat, could just be the solution.https://p.dw.com/p/1K0fEImage: Fotolia/Sven BährenAdvertisement