Cleaning the streets of garbage while creating jobs for unemployed youth. This is what a youth group is doing in the Kenyan capital, Nairobi. According to the United Nations, uncollected garbage is among the biggest problems in cities, and because of a growing population worldwide the problem seems to grow bigger. But there are solutions as the youth group in Nairobi is showing. Ruud Elmendorp reports from the Mathare slum in Nairobi.