Video: In Depth

Lagos school girls harness the power of pee (2:08) 

Nov. 23 - A group of enterprising Nigerian teenagers have developed a generator powered by urine to counter the country's chronic shortage of reliable electricity. It is estimated that more than half of Nigeria's 160 million citizens have no access to electric power, but the four Lagos schoolgirls believe one solution may lie in the power of pee. Jim Drury has more. ( Transcript )

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