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Tuesday, May 22, 2018, 2:11 p.m.

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Wisdom of slime

The U.S. interstate highway system is often celebrated as a simple yet highly efficient transportation scheme—one that, starting in the 1950s, transformed the U.S. economy and lifestyle. Its network of roads was designed to maximally span the country with a minimal number of links, while still allowing for enough redundancy to help drivers overcome wrong turns and missed exits.

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