Placenta and hormone levels in the womb may have been key drivers in human brain evolution
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Placenta and hormone levels in the womb may have been key drivers in human brain evolution

The placenta and the hormones it produces may have played a crucial role in the evolution of the human brain, while also leading to the behavioral traits that have made human societies able to thrive and expand, according to a new hypothesis proposed by researchers from the Universities of Cambridge and Oxford.