To support Kelvin and young innovators like him, please visit http://www.crowdrise.com/InnovateSalone 15-Year-Old Kelvin Doe is an engineering whiz living in Sierra Leone who scours the trash bins for spare parts, which he uses to build batteries, generators and transmitters. Completely self-taught, Kelvin has created his own radio station where he broadcasts news and plays music under the moniker, DJ Focus.