So they compare one mega-corp food outlet to an even bigger mega-corp food outlet? WalMart is built having a better supply chain than anyone else. They can buy

So they compare one mega-corp food outlet to an even bigger mega-corp food outlet? WalMart is built having a better supply chain than anyone else. They can buy the same stuff as whole foods, for less, because they buy more and have the best distribution system around. How about comparing WalMart to your local food Co-Op or a famers market. Or focus on eating things that are actually in season and locally sourced. If you start looking at the carbon impact of your food, that's one WalMart and Whole foods will lose every day.