Now Playing: 3-7-13 Marketplace Morning Report

North Korea is threatening a pre-emptive nuclear strike against the United States as the United Nations prepares to vote this morning on a resolution that would boost economic sanctions on North Korea. Facebook is unveiling changes to its 'Newsfeed' later today in an effort to sell more ads. The company and its rivals are also exploring location based advertising, but it turns out determining your exact location isn't as easy as it sounds. And, what's got automakers down in Europe?