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Stories by Robin Anne Smith

How Did Human Brains Get to Be so Big?

New research points to an ancient energy tradeoff that meant more fuel for brains, and less fuel for muscles. Human brain Recently while visiting the National Museum of Natural History in Washington, D.C., I found myself pondering the noggins of some very, very, old apes.Along one wall of the Hall of Human Origins — an exhibit on human evolution that opened in 2010 — were 76 fossil skulls from 15 species of early humans.

February 21, 2012 — Robin Anne Smith

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