Orange juice, light bulbs and the humble potato will now display labels telling shoppers the size of each product's carbon footprint, Tesco has announced. Tesco says the labels will help their shoppers make more informed choices A range of 20 products will bear the Carbon Trust's Carbon Reduction Label allowing customers to compare the carbon impact of the items in their shopping trolley. The scheme follows the trial of the labels on other products including Walkers crisps and Innocent drinks.