Cucumbers tend to slide out the back of a sandwich when confronted with bite force, writes Pashman in Eat More Better. Courtesy of Alex Eben Meyer, Simon & Schuster hide caption

toggle caption Courtesy of Alex Eben Meyer, Simon & Schuster

Friction Can Save Your Sandwich, And Other Tips For Better Bites

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Vending machines at the University of Arkansas in Little Rock, Ark., were stocked with more healthful snacks in 2006. Danny Johnston/AP hide caption

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Why Healthful Vending Machines Might Hurt The Blind

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