The book CAFO - The Tragedy of Industrial Agricultural Factories, sits in my basement bookshelf, in a place where I'm confident my kids won't notice it. It's not that the book is gruesome; a book on the subject of concentrated animal feeding operations (CAFOs) could easily have been more bloody. And it's not that my kids don't know the difference between "happy meat" and Happy Meals. Maybe it's simply the fact that the terrific book CAFO -- all 300 gigantic, photo-filled pages of it -- shows a side of human nature that I'm still trying to protect my elementary schoolers from. A side that I, like many others, would prefer to keep in the basement -- just out of reach of children.