When the Massachusetts Institute of Technology (MIT) learned of 15-year-old Kelvin Doe, they knew he possessed an extraordinary gift.

Don't be fooled by his young age. Kelvin is a completely self-taught engineer who has built batteries, transmitters, and generators — all from materials he salvaged from the trash. In fact, this wunderkind from Sierra Leone has even built his own radio station, on which he broadcasts news and music as "DJ Focus."
Kelvin made history in 2012 as the youngest participant of MIT's prestigious "Visiting Practitioner's Program," through which he was invited to visit the United States and presented his work to students at MIT and Harvard. In 2013, Kelvin delivered a TED talk, titled "Persistent Experimentation," on the challenges his come country still faces and how they can be overcome through innovation.