"Food" for thought:

Two researchers at the University of Chicago estimated that switching to a vegan diet would have a bigger impact than trading in your gas guzzler for a Prius (PDF). A study out of Carnegie Mellon University found that the average American would do less for the planet by switching to a totally local diet than by going vegetarian one day a week....

The visceral reaction against anyone questioning our God-given right to bathe in bacon has been enough to scare many in the environmental movement away from this issue.