Sustainability publication Ensia, this week published an account of bio-intensive farming projects that create more food per aquare metre with less energy, water and nutrients. Whereas corporate, industrialised agriculture is focused on profit and consequently minimizes labour, bio-intensive farming focuses on the minimization of external resources. As a result it is ideal for urban farming and community projects where capital and external resources are in short supply.
http://ensia.com/features/how-three-u-s-mini-farms-are-sowing-the-seeds-of-global-food-security/