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Now Playing: 07-26-12 Marketplace Mid-day Update

Sanford Weill was once the king of making big banks bigger. Back in 1998, he combined Travelers, the insurance company, with Citibank to create Citigroup. But now, Weill wants to break up big banks. Facebook will post its first earnings after its IPO today, but the company has had a rocky road since it started selling shares and there are still big questions about its future. And why Goodyear is working on a new kind of tire: One made partially from soybeans.