Agree. This should be legislated just as calories are today. You could ratchet up the severity of the legislation slowly; initially you might allow estimates, o

Agree. This should be legislated just as calories are today. You could ratchet up the severity of the legislation slowly; initially you might allow estimates, over time you could start to audit the supply chain etc. Some items do already expose this information, but it's pretty much all stuff for the eco market. Though I remember Walkers' crisps doing this ten years back. 80g for a packet of crisps. Or about 3kg CO2 per 1kg crisps. Doesn't include final transportation though.