A young African from Malawi, William Kamkwamba builds a Windmill. http://bit.ly/fb5hnk
This inventor from Malawi built an electricity-generating windmill from spare parts, working from rough plans he found in a book in a small library near his village.
“After seeing windmills on the cover of an 8th grade science book, he set out to build his own machine using scavenged parts from a scrap yard. His first windmill was made from PVC pipe, a tractor fan, an old bicycle frame, tree branches, and produced twelve volts to power four light bulbs and charge mobile phones. A second windmill pumped water.” – TEDxTalks. http://www.youtube.com/watch?v=Uhs7rP4a-Mg&NR=1
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