Grist shared a list from the likes of Michael Pollan, Ruth Reichl and other foodie/activist/farmer types of their favorite food books of 2010. You can check out the list here.
I have The Dirty Life on hold through my library system and second on my list of to reads is Free for All: Fixing School Food in America a history of school lunches (unappetizing I'm sure).
On a slightly different bent but still talking about sustainability, I heard a great interview on NPR's World View today with John Vucetich with the Isle Royale wolf-moose research project He discussed not only his research there but touched upon a host of issues revolving around environmental sustainability and ethics. You can find a link to the podcast here.