Lynne Cox on "Swimming to Antarctica"

Lynne Cox is a long distance swimmer who specializes in the impossible. So far, she’s broken the men’s and women’s records for the English Channel, crossed the Strait of Magellan, and taken on the icy waters of Antarctica without a wetsuit. She’s also written a book: “Swimming to Antarctica.” She tells Steve Paulson how she trained, and how she’s able to do survive in such cold water.