You have no doubt been reading about the millions of chickens being slaughtered in what appear to be increasingly hopeless attempts to contain avian flu. Poultry, the most efficient converters of vegetable matter into meat, pound for pound, are being taken out of the food chain in many places. But crops, the staples the world relies on for its basic calorie supply, are also threatened, as Canadian plant pathologist Dick Hamilton, the former ProMED-mail plant moderator, recently wrote. Here are a few morsels to give you the flavor:












