Today I presented vegetarianism to my ethics class. Here are some more links to help people understand factory farming.
And a couple of links to vegetarian health
I tried to avoid any site that is obviously biased (PETA etc,) and included sites that have good reputations (the humane society, mayo clinic). And for the other side:
Although, I don't think that this book really presents the arguments fairly. Cherry picked statistics and straw man arguments seem to miss the point about animal suffering. Instead she focuses on the quacks (All animals should live, and we should protect animals from each other), and sympathy (animals die in making your lettuce). I don't have a problem with animals dying. They die all the time. I just don't think that humans should inflict unnecessary suffering, which she doesn't seem to give much justice to, and seems to believe that if we all became vegetarians, that we would have need more farmland, rather than less, which even government statistics point out is plainly false.