This is not your average science project. A quartet of African teens have developed a generator that runs on urine. The talented young scientists -- Duro-Aina Adebola, Akindele Abiola and Faleke Oluwatoyin, all 14, and Bello Eniola, 15 -- debuted their pee-powered contraption at Maker Faire Africa in Lagos, Nigeria, CNET reports. The Maker Faire's blog summarizes how it works: Urine is put into an electrolytic cell, which cracks the urea into nitrogen, water, and hydrogen.