The major supermarkets are vying for position in demonstrating their green credentials. Tesco seems to be leading the pack in food labelling by announcing it will shortly be adding food miles. If Tesco really want to tackle climate change by reducing aviation then why don't they withdraw their clubcard deals on airmiles? - stop encouraging their customers to fly. No doubt the Chief Executive, Mr Leahy would say it's all about giving consumers choice.
And on that note, when I start checking out the food miles on my green beans from Kenya versus my locally-sourced runner beans which is the more ethical choice? More environmentally friendly to buy local - but then the UK farmer probably lives in a nice house, sends his children to school and has three square meals a day. His Kenyan counterpart will be existing on a lot less - better to suffer some greenhouse gas emissions and support the developing world? I really don't know.