David Kestenbaum noticed that a pack of Milk Chocolate M&M's weighs 1.69 ounces, but a pack of Peanut Butter M&M's weighs 1.63 ounces. He had to know why. But the confectionary world has its secrets.

David Kestenbaum noticed that a pack of Milk Chocolate M&amp;M's weighs 1.69 ounces, but a pack of Peanut Butter M&amp;M's weighs 1.63 ounces. He had to know why. But the confectionary world has its secrets.

The M&M Anomaly

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Wanna see a trick? Give us any topic and we can tie it back to the economy. At Planet Money, we explore the forces that shape our lives and bring you along for the ride. Don't just understand the economy – understand the world. Wanna go deeper? Subscribe to Planet Money+ and get sponsor-free episodes of Planet Money, The Indicator, and Planet Money Summer School. Plus access to bonus content. It's a new way to support the show you love. Learn more at plus.npr.org/planetmoney

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The M&M Anomaly

The M&M Anomaly

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