Just checked the book "Farmacology" by Daphne Miller, M.D., out from the library, and am sure it would be of interest to many on this forum. It draws many links between human health, soil health, animal health, and basically expands the Western view of health in a science-based holistic direction. The chapter on egg factories/farms was right in line with the recent MDA post by Tendergrass Farms. It's a great read--personal, not dry.