'Pink Slime' to Disappear from Some School Cafeterias

Under a change announced by the U.S. Department of Agriculture, districts that get food through the government's school lunch program will be allowed to say no to ground beef containing an ammonia-treated filler derisively called "pink slime" and choose filler-free meat instead. What's not yet clear is how much the switch might cost and whether it could lead to price increases for school lunches.