After covering East Africa for five months, a profound problem I encountered in every country was what will happen to the continent's exploding cities.
The U.N. predicts that by 2040, six in 10 Africans will live in cities — an estimated 1 billion people. One of the pressing questions for African leaders is how to occupy all the idle young men who turn to crime because there are no jobs.
In Nairobi's Huruma slum, I came across a point of light — one man's attempt to take in thieves and prostitutes and give them honest work, of all things, making jewelry.