text:  Smaller studies had mixed results, but a new, larger, more complex one at a federal research center in Athens, Georgia, indicated pasteurization does kill bird flu in milk. Chuck Sievertson, ABC News. The National Park Service says Friday that it intends to ban hunters from baiting bears in national preserves in Alaska. The new rule, set to take effect later this summer, would bar sport hunters from using baits such as bacon grease, pastries, syrup, or dog food to attract bears. Agency says it's concerned about encouraging