Hobbits are exceptions to the rule that older ancient humans had proportionally larger wisdom teeth and smaller brains. Jim Watson/AFP via Getty Images

Hobbits of Flores evolved to be small by slowing down growth during childhood, new research on teeth and brain size suggests

New research on the size relationship between brains and wisdom teeth suggests that bigger brains aren’t necessarily the driving force in human evolution.
Any hominid fossil find with molar teeth can be plugged into a new equation that reveals its species’ prenatal growth rate. Gil Cohen-Magen/AFP via Getty Images

Fossil teeth reveal how brains developed in utero over millions of years of human evolution – new research

Using a new equation based on today’s primates, scientists can take a few molar teeth from an extinct fossil species and reconstruct exactly how fast their offspring grew during gestation.

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