It's in the headlines precisely because no one expects anything from sub-Saharan Africans. [The principles behind the technology are literally so simple that second grade children can master them.](http://www.pbslearningmedia.org/resource/phy03.sci.engin.design.lp_windmill/windmills-putting-wind-energy-to-work/) The hardest part about what he did was the labor involved.