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Now Playing: 07-12-13 Marketplace Money

For the next few weeks, we're devoting Marketplace Money to the basics, concepts like banking, investing, saving and credit. This week, we're devoting the show to money, how we interact with it, and what the future of money looks like. The next time you hold a dollar in your hand, consider this: money is just paper. It only has value because we all believe it does. But where does this collective faith in money's worth come from? Also, a look at how money is portrayed in pop culture. Plus, we explore the best ways to save, spend and invest your money. And forget the Washingtons and Benjamins. Dump the credit cards. These days, Bitcoin and mobile phones pay for stuff. How are new currencies changing our behavior? Finally, a visit to the future spenders of money: children, and a few personal finance experts suggest their favorite finance-related books for your summer reading list.