The $5 solar-powered device 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 upgrade for the two billion people that still use CO2-emitting firewood as fuel. * http://www.greenlaunches.com/alternative-energy/cheap-solarpower-kyoto-box-c ooker-for-rural-africa.php * http://www.cnn.com/2009/TECH/04/09/solar.oven.global.warming/index.html?eref =rss_topstories * http://www.fastcompany.com/blog/ariel-schwartz/sustainability/kyoto-box-wins -climate-change-challenge This just begs the rhetorical question, why this was only invented now? I read somewhere that one-third of the westward-ho covered-wagon pioneers of the 1800s died from cholera, but all their wagons were equipped with the brine, salt, onions, and lemons, which when mixed properly cures cholera. Such stories make me optimistic about the future. Rob Howard, Phoenix, Arizona
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