How did two brothers become prosthetic pioneers for Africa?

Africa Daily - A podcast by BBC World Service

When a firework blew up in Ubokobong Amanam’s hand, he was left with life changing injuries. He needed a prosthesis to replace the fingers he lost, but none of those on the market matched his complexion. The accident inspired his brother John to work on making something better for him. But they didn’t stop there…they now run a company making prostheses (artificial body parts) for the African market and employ 35 people. And next they have their sights on the world of robotics. #AfricaDaily