Today, we bring you the second in our two part series on the pollution caused by factory pork production. Last week we reported on how many commercial hog operations have moved into western states to avoid regulation. This week we report from North Carolina, where tighter regulation has led to a two-year moratorium on large-scale pig farms. The state has also asked its agriculture department to research new ways to handle hog wastes. As Diane Toomey of member station WUNC in Chapel Hill reports, there seem to be plenty of ideas.