UK grocery stores to label food's carbon costs along with calories and nutritional info

This is so cool. Yet another reason to wish to live there. Very civilised place, the UK.
"In the most significant step announced yesterday, Tesco, the UK's biggest retailer, which produces 2m tonnes of carbon a year in the UK, said it would put new labels on every one of the 70,000 products it sells so that shoppers can compare carbon costs in the same way they can compare salt content and calorie counts.
Meanwhile all food products airfreighted into the UK will carry an aeroplane symbol."
LINK