These Kenyan cousins invented bio-robotic prosthetic limbs out of recycled materials

In the suburbs of Kikuyu in Kenya’s Kiambu County, 29-year-old Moses Kiuna and his cousin David Gathu are fiddling with wires and electric cables in their workshop, their grandmothers’ former granary.

They’ve been doing this since they were children—dismantling toys, radios, and TV sets—despite the spankings their fiddling attracted from their parents. Today, however, their tinkering is a lot more advanced.