Big-box British retail chains are going green

Watch out, Wal-Mart! Last week, British mega-retailers Tesco and Marks & Spencer both announced forward-thinking sustainability plans. Tesco even plans to begin labeling all products on its shelves with information about the amount of carbon generated during their production and transport. As Brits face the “Is it OK to support a big-box store if it’s trying to go green?” conundrum, Gristmill contributor Peter Madden theorizes on the motives behind the supermarket sustainability scramble.