Engineers Malcolm Knapp and Heather Fleming of the San Francisco Chapter of Engineers without Borders helped design this $100 wind turbine. ( I also love her "club sandwiches, not seals" T) Wired reports that unlike the large-scale assemblies found in wind farms, the roughly two-foot-wide and three-foot-tall turbine has a vertical axis. McLean said that orientation worked better in the choppy conditions likely to meet the turbine out in the field, where it'll be bolted on to buildings, towers or even trees. It will be built in Guatemala, designed to be a cheap replacement for the kerosene lamps that are a fire and health risk. Read full from wired