I love this story of a 15-year-old kid, Kelvin Doe, from Sierra Leone who is a extraordinary inventor and tinker. I also love how his mentor sees that infecting a society with Maker ethic has the potential to change a country. Kelvin is an engineering whiz kid who has made some amazing things just from parts he finds in the dustbin in Sierra Leone. He built his own radio station and generator and a host of other very practical gadgets... all self-taught. He recently was invited to visit MIT for 3 weeks. It's a moving story. Sorry about the ad at the end, but it seems like a worthy cause.