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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.
Delivering a human baby – which has a large, highly developed brain – is risky for mother and baby. jaredandmelanie/flickr

This is what happens to a baby’s body during birth

Babies undertake a massive transition during labour and delivery as they move from the supported environment of the uterus to independent existence.

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