pirates pirates

This 1793 grave is an early version of the kilogram. It is possible this object, now owned by the National Institute of Standards and Technology museum, was once pirate treasure. NIST Museum hide caption

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NIST Museum

How Pirates Of The Caribbean Hijacked America's Metric System

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Captain Edward Teach, better known as Blackbeard, is said to have tucked slow-burning fuses into his beard and lit them on fire before plundering towns for gold and rum. Hulton Archive Circa/Getty Images hide caption

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Hulton Archive Circa/Getty Images