So, how do we assess the importance and contribution of food miles (ie how far food has travelled to get to our plate) to our patterns of unsustainable living? Is eating local worth the effort when we could be supporting destitute farmers by buying Fairtrade versions of the same food?
According to a report called CO2 Emissions from Freight Transport in the UK by Professor Alan McKinnon for the Climate Change Working Group
of the Commission for Integrated Transport:
Using what are considered the most reliable estimation methods, it is suggested that domestic freight transport in the UK generated 33.7 million tonnes of CO2 in 2004, roughly 21% of emissions from the transport sector and 6% of total emissions from all sectors. Road transport accounted for 92% of these freight- related CO2 emissions. The movement of freight in vans, which represented only around of 35% of all van-kms, was responsible for 13% of total freight emissions.
So an estimated 6% of all emissions are caused just by moving stuff around the country, more than is saved by persuading the whole of Europe; to use low energy lightbulbs (23 million tonnes of CO2 per year).
Globally, international shipping produces a whopping 1.2 billion tonnes of carbon dioxide and as one of the biggest economies in the world, what we put into our mouths is responsible for a lot of that.
According to the BBC ninety-five per cent of the fruit and half of the vegetables in the UK are imported. Looking around in a supermarket suggests that the majority of products on the shelves are from outside of the UK.
So, what is there to conclude?
Whilst I am sure Oxfam; are right to suggest that airfreight is a minimal polluter compared to other lifestyle choices, I cannot see that transport which emits up to 50 times more pollutants than other transport is justified. I feel really sorry for the farmers, and I am committed to the concepts of fairtrade. But I cannot justify an existence which requires me to save destitute farmers by disproportionately polluting the planet. So I am not buying anything which has been airfreighted for a start, fairtrade or not.
Second, far more important than airfreight is national transport of food, which represents 6% of emissions. That isn’t the emissions from growing or processing, that is simply from getting the food from the farm to the plate. We could be eating things which originated in fields next to our house and are transported several times just for us to buy them shrink wrapped in the supermarket. There is enormous capacity to reduce this by eating local food.
Finally, there is a moral case. If we can survive eating products that we can obtain in our own country, it is immoral to import them from other countries simply because they are cheaper.
For these reasons, I believe that local food has the vast weight of moral and environmental justification. As I mentioned in the ‘about’ section of this blog, the issues are complicated – particularly once we start to consider how the products we eat are grown. We must also make strenuous efforts to improve the lives of the poor and to find alternatives which allow them better lives without the necessity for air transport.