by JEAN LOUIS SANTINI
Human brains have shrunk over the past 30,000 years, puzzling scientists who argue it is not a sign we are growing dumber but that evolution is making the key motor leaner and more efficient.
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Women’s brains, which are smaller on average than those of men, have experienced an equivalent drop in size.
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The Neanderthal, a cousin of the modern human who disappeared about 30 millennia ago for still unknown reasons, was far more massive and had a larger brain.
The Cro-Magnons who left cave paintings of large animals in the monumental Lascaux cave over 17,000 years ago were the Homo sapiens with the biggest brain. They were also stronger than their modern descendants.
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“The chimpanzees are violent because they want power, they try to have control and power over others while bonobos are using violence to prevent one for dominating them,” Hare continued.
“Humans are both chimps and bobos in their nature and the question is how can we release more bonobo and less chimp.
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