Carbon Labelling: Too Complex or will it Transform Our Buying?

In January 2007, Sir Terry Leahy, Chief Executive of Tesco, made a surprise announcement: Tesco intend to put carbon labels on all their products. The hope is that consumers will be able to judge the impact on the environment of what they buy. But Tesco stock 70 000 products. Can it be done? And, if so, how?Brenda Boardman looks at the challenges.