Environmental Myths Harm Our Planet

By Hans Bader, OpenMarket.org (link)
Locally-grown and produced food isn’t necessarily better for the environment, or more economical for society, than food produced elsewhere. It often costs more and results in more soil erosion and greenhouse gas emissions. It’s better for the environment for an Englishman to eat lamb raised in New Zealand than lamb raised in England.

It's the food, stupid

By Ezra Klein, The American Prospect, prospect.org (link)
The average American household burns through about 8.1 metric tons of greenhouse gases as a result of food consumption. By contrast, if your house has a car that gets 25 mpg and you drive 12,000 miles a year, that produces 4.4 metric tons of greenhouse gases.