Above is a mixer and FM transmitter that Kelvin Doe (from Sierra Leone) built from scrap cardboard and discarded ‘broken’ electronics. Kelvin’s story (stumbled upon via Grist.com ) is made even more inspiring and amazing when taking his age into account – 15. Broadcasting a guerrilla radio show under the alias of DJ Focus, Kelvin strives to bring communication and debate of issues to his community – a true visionary. Too radical. Here’s hoping that this young man (and many others like him) will bring about positive change to Africa’s future.