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"(Medical Xpress)\u2014Brazilian researchers Karina Fonseca-Azevedo and Suzana Herculano-Houzel suggest humans evolved bigger brains because they learned to cook their food. In a paper published in the Proceedings of the National Academy of Sciences, the two outline research they've conducted that involved counting the number of neurons in the brains of various primates, the results of which showed that the only way early humans could have evolved bigger brains was to find a way to get more energy from the food they ate, i.e. cooking it."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2012-10-cooked-food-larger-human-brains.html>