No fool

"In April, Walkers Crisps began labelling its cheese and onion bags with a carbon footprint - how many grams of greenhouse gases were emitted in its production - and that has been rolled out to other flavours. A Walkers spokeswoman says the company's own survey shows nearly 80% of consumers are aware of the labels with 20% dismissing it as "purely a gesture". And the crisps manufacturer has promised to reduce water use per kilo by 5% year on year, and energy use by 3%."