The lights of Las Vegas' economy have lost some glow

Las Vegas is arguably the discretionary spending capital of the country, if not the entire world. This makes it a good barometer for understanding the current economy — not just of one city or state, but the entire nation. And right now, Vegas is grappling with declining tourism and a high unemployment rate. We'll visit Sin City to learn more about the slump. Plus, why is China stepping up controls on rare earth metal exports?