What sex is to interpersonal relationships, eating is to the human-environment relationship: a consummation of humans' connection to the living biosphere. But while sticking one's tongue into a new and exciting environment may be an act as old as the planet, it can also lead to some nasty surprises. In this lively look at foodborne illnesses, David Waltner-Toews discusses food-related problems caused by bacteria, viruses, and parasites, including...