As of this coming Thursday, the food pyramid -- that symbol of healthy eating -- is going to go the way of the real pyramids and becoming a thing of the past. This week, the Obama administration will be unveiling a new graphic to tell American consumers what quantities of grains, fruits and vegetables, protein and dairy they should eat to maintain a healthy diet. The pyramid is to be replace by a plate, with four different-colored sections indicating how much of each food group the United States Department of Agriculture recommends and is a "crucial element of the administration's...