What to Know About the Salmon on Your Plate

Norway is the largest exporter of salmon in the world. And while some of those fish are wild-caught, many are raised in 'fish farms'- large cylindrical pens made of nylon in the open water. Sometimes these farmed fish escape, mixing with the local population and causing ecological issues. We see farmed fish in a Norwegian fjord and hear about potential solutions to the problem. By Rob Schmitz, Greg Dixon