The human brain shrank in size about 3,000 years ago, scientists may have found an explanation by studying ants. 🧠
"Most people are aware that humans have unusually large brains—significantly larger than predicted from our body size. In our deep evolutionary history, human brain size dramatically increased,"
Indeed, previous conjectures on the shrinkage did propose that as the average human body declined in size over the millennia, our brains also began to scale down. A larger body would have to support a larger nervous system. Another aspect of this is that diminishing bodies would encourage smaller pelvic sizes in females, asBut the team behind the new study didn’t find evidence for these explanations.
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