The highly regarded Food Ethics Council has published an interesting and well informed paper on 'Sustainable Farming and Food'. You can download it at: Sustainable . There is also an oppprtunity to participate in an online discussion on the paper.
I'm not sure that I agree with all the paper, as I think that at one point it does fall into a protectionist trap set by the industry. When time allows I will publish a summary and some comments here. In the meantime, readers of this blog may wish to take a look at the publication themselves.