$5 Solar Powered Kyoto Box Wins HP Climate Change Challenge (Fast Company Magazine) John Bohmer's Kyoto Box won the $75,000 Financial Times and HP Climate Change Challenge today thanks to an ultra-cheap and simple design with the potential to provide cooked food and clean water to billions. The $5 solar-powered consists of a black inner cardboard box and a silver foil-covered outer box that concentrate enough heat to cook food and boil water. Bohmer's invention could be a major ... [News Source]