To turkey or to Tofurkey — is that the eco-Thanksgiving dinner question? Whatever your answer, there's an eco-guide to making your feasting choices as green as possible. A few sustainable Thanksgiving dinner guides are competing for your green palate: 

>> Green your Thanksgiving dinner with the help of the Cool Foods Campaign, a site put together by the Center for Food Safety to help you have the “coolest” — meaning the lowest carbon footprint — Thanksgiving ever, yummily. Visit the site for recipes from two top sustainable chefs, Dan Barber of Blue Hill and Nora Pouillon of Restaurant Nora.

>> Cook a sustainable Thanksgiving dinner with Treehugger, which has compiled its many mini guides together into one handy post. Find out how to make a fantastic Thanksgiving turkey, or read up on the past 100-Mile Diet Thanksgiving Challenge.

>> Calculate the environmental impact of your dinner menu with the Low Carbon Diet calculator. Put together by eco-conscious food company Bon Appétit Management, the Low Carbon Diet calculator will help you figure out whether it's greener to opt for Tofurkey, or to find a free-range, local heirloom turkey instead. Of course, you might also want to weigh in family traditions and the opinions of your dinner guests to make this decision...