Medical journalist Jeanne Lenzer warns that implanted medical devices are approved with far less scrutiny and testing than pharmaceutical drugs. As a result, she says, some have caused harm and even death. "Walmart tracks heads of lettuce they have on a shelf at any given time. They know how many they have to replace. They can track those a lot better than we're tracking medical devices implanted in people," Lenzer says. Her new book is 'The Danger Within Us.' Also, TV critic David Bianculli discusses the comeback of the anthology series.