One in four undernourished people in the world live in Africa: Africa is the only continent where the absolute number of undernourished people has increased over the last 30 years. Food insecurity remains an essentially rural phenomenon. It affects the rural world more than cities because the people producing food often do not make enough to feed their families due to the lack of adequate access to means of production (land, manure, tools), and rural communities are poorer and struggle to buy food. Permanent economic access to food has become the decisive factor in food insecurity.