Almost Self-sufficiency in an Urban Slum
Rural folk moving to the city is a serious problem in much of the world. The typical result is that you get people who used to be self-sufficient now in a situation where they cannot be. They don't have the space to grow their food, they don't have useful skills for employment and there is usually no safety net. While the best approach is to discourage them from making the move, generally by bringing services such as education and health care to the campo, it doesn't work for everyone.
On the other end are typical NGO hand out programs which tend to create a new culture of handout-dependent urban dwellers. We all have seen the results. Well, a UK-based NGO, The Haller Foundation, seems to have a better idea. I haven't investigated their successes but I like their ideas. Partly because they are about as low tech as you can get and partly because they seem to look at the whole system rather than just addressing a single problem.
I recommend the video called Urban Slum Garden. Nothing pretty but is just a few minutes you can see how a truly slum house in Kenia ends up with pure water, fresh food including fish, cooking gas, a food cooler and more.