Carbon labelling on food addresses design constraints 4 and even 6

If you start carbon labelling food, you will help people understand the heavy load from fertilizers and transportation in the industrialized food system. This addresses the new design constraints for the American economy:

4 – Minimizing energy use

and, I would submit, 6 – Maximizing health and wellness (since foods like meats and processed foods generally have a higher carbon count than fresh foods)