Labeling the carbon footprint of food prompts people to eat more sustainably: This was the key finding for TRR 266 Accounting for Transparency researchers from LMU Munich, HU Berlin and Aalto University in Finland in a recent field trial. How the information is presented turned out to be the critical factor: The effect was greatest when CO2 information was visualized as traffic light colors or displayed in the form of cost to the environment.
