What's up with peanut butter

How much you are willing to pay for your favorite sandwich? If it has peanut butter in it, you may soon be recalculating. A looming shortage of U.S. peanuts is causing the price of peanut butter to soar. Even if you're willing to pay more for peanut butter, you should know what's driving up the cost of this American staple food. Listen to this episode of Fields Notes for the answer.