Landlessness is becoming an increasingly common problem in some rural areas, as governments take over subsistence farmers' land for large-scale development projects. Micro-agriculture is another potential answer for food-insecure communities with limited capacity to grow their own foods. Oxfam is teaching these techniques to inhabitants of the Sahel region. It's not a widely disseminated tool yet, but I think it could have exciting potential, especially in developmentally hopeless situations (e.g. Sudanese refugee camps, perhaps).
