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Another chance to listen to an episode about how we might shop greener. More companies are rolling out carbon dioxide emission labels on products. Unilever, the global consumer goods giant, recently made a commitment to put carbon footprint information on 70,000 products. Multi-national companies, Oatly and Quorn, are also adding similar labels to their packaging.
But this is not the first time companies have tried this. In the 2000s, for example, one international supermarket put carbon labels on hundreds of products, only to cancel the project a few years later.
Why are carbon labels coming back now, and what will the information on them really tell us? How do you measure the carbon footprint of a product? Can carbon labelling change what we buy and reduce emissions?

Presenters: Neal Razzell and Graihagh Jackson
Producer: Darin Graham
Reporter: Julie Sogaard
Researchers: Zoe Gelber and Olivia Noon