Humans have extraordinarily large brains, which tripled in size in the last few million years. These increases are puzzling, because brain tissue is energetically expensive. Scientists used a computational model to show culture may explain our brain size increases: The Cultural Brain Hypothesis.

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Humans have extraordinarily large brains, which tripled in size in the last few million years. These increases are puzzling, because brain tissue is energetically expensive. Scientists used a computational model to show culture may explain our brain size increases: The Cultural Brain Hypothesis.