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Crayola Colours Double Every 28 Years

By on February 7, 2010 in Pens & Pencils

The excellent blog of random, interesting stuff with a science bent, Boing Boing, brings our attention to the fact that Crayola crayon colours grow at an average rate of 2.56% annually. Thus, Crayola’s Law: The number of Crayola crayon colours will double every 28 years.


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