Hey, I know those people!
We had the pleasure of talking with Eliot and Barbara at a few producer's dinners hosted by a restaurant/inn here in Maine. They're both very knowledgeable and passionate about growing food in a sustainable manner.
Eliot figured out how you can grow fresh vegetables year round in our less-than-ideal climate with the help of a cold frame and the right combination of crops. One of their books,
Four-Season Harvest, is a really good primer on the subject and an enjoyable read as well.