So, I have been attempting to be a vegetarian for the last few months and have discovered that the issue can be quite polemical. Here is a link to the wiki on environmental vegetarianism. It contains what were my deciding reasons to pursue vegetarianism. Also, I would very highly recommend the book Fast Food Nation, which addresses the meat industry and is an excellent critique of American culture. Note: Vegetarianism is not a cure-all for the world's problems but a small element of a conscientious lifestyle. I would get rid of cars before meat.