This online publication EATgreen holds quality links on Sustainable Nutrition and related topics.
Sustainability for Nature and You: Easy - Healthy - Green
Food is one of the main factors for sustainability.
Let's create a happy future through the way we eat.
You've got to have a look at these!
http://foodtank.com/news/2013/05/twenty-four-ted-talks-that-will-help-save-the-food-system
This image is a nice and simple way of explaining why to go plant based! Can it be more obvious why your diet can't be based on meat if you care about Sustainability?