Directed by Matt Wechsler. With Marty Travis, Dan Barber, Rick Bayless, Mark Bittman. America is facing a food crisis driven by profitability and a lack of consumer education. While the window to transforming our heartland continues to shrink, passionate individuals have emerged who provide hope that the health of our nation might still remain within our grasp. Sustainable weaves together expert analysis of America's food and farming system with a powerful narrative of one…