I saw this article in the Opinion section of the Boston Globe. It describes the possiblity of increase of local food. The writer uses his knowledge of New England's history to set a realistic plan for future agriculture. Here is the link to the article and some excerps:
http://www.boston.com/bostonglobe/editorial_opinion/oped/articles/2009/08/26/the_promise_and_limits_of_local_food/"Today New England’s population approaches 15 million, while only 7 percent of our land remains in agriculture. To come even close to feeding ourselves we would have to cut down a large part of our recovered forest - not something we want to repeat. But there are still good reasons to move toward more local food production. We need to determine which crops to grow here. What were we growing a century ago, when New England was already an urban, industrial society?"
"We need a targeted expansion in local production of foods that really belong in New England, tied to reforms throughout our global agricultural system - and certainly, some reduction of meat in our diets. This would bless us with healthier food, an attractive landscape, and opportunities for people to become more engaged with how their food is grown. Yes, we can shrink our carbon footprint, too, if we farm with that in mind. But in the end those connections, not some chimera of local self-sufficiency, are the real benefits of local farming."