Is carbon the new calorie?

More companies are rolling out carbon dioxide emission labels on
products to help us make greener choices. Unilever, the global
consumer goods giant, recently announced it is committing to put
carbon footprint information on 70,000 products, while
multi-national companies Oatly and Quorn have already started
adding labels like this to their packaging. But this is not the
first time companies have tried this. In the 2000s, for example,
an international supermarket put carbon labels on hundreds of
products, but cancelled the project after a few years. Why are
carbon labels coming back now, and what does this information
really tell us? How do you measure the carbon footprint of a
product? And will this drive behaviour change and help the
environment? Presenters: Neal Razzell and Graihagh Jackson
Producer: Darin Graham Researchers: Zoe Gelber and Olivia Noon