It is remarkable what people contribute to the river of the Internet. Check out the contributions at “Cat-v.org Random Contrarian Insurgent Organization”. In particular, the captioned page I just found:
(…) Food Miles
A great way to encourage the growing of food in the least efficient and productive places, ensuring copious waste of resources and increased food prices for everyone (which as usual, mostly harm poor).
Also a great new way to keep poor farmers in developing countries from exporting to the most lucrative markets.
There is lots more, and excellent science-based references, e.g., to Steven Novella.