Stewart Brand was the first human being to use the term "personal computer" and has a amazing bio. In this 2-minute presentation he shows his views on world poverty and how the cities are the best way to get people out of poverty.
It is true that the poorest of the poor still live in "Jeffrey Sachs" rural villages, but the large share of poor has already moved to squatter cities. Urbanization is not the problem, it is part of the solution to the social issues. Remember what Jane Jacobs and Hernando De Soto taught us: slums have their own vitality and a huge potential to improve the lives of their dwellers.
Click here for a fantastic one hour lecture.