by George Monbiot September 8, 2010 AlterNet I used to think being a vegan was the only ethical way to eat. But an important new book suggests we can change our food system to allow for healthy meat consumption. Carracci - The Butchers Shop - 1583 This will not be an easy column to write. I am about to put down 1,200 words in support of a book that starts by attacking me and often returns to thi…