The brains of modern humans are about 13 percent smaller than those of Homo sapiens, who lived about 100,000 years ago. Opinions differ as to why this might be the case.
Traditionally, it is believed that our large brains set us apart from other animals. Our ability to think and innovate allowed us to create the first art, invent the wheel and even land on the moon.
Compared to other animals of similar size, our brains are actually very large. In the six million years since our last common ancestor with chimpanzees, the size of the human brain has almost quadrupled.
However, studies show that this trend toward larger brains has been reversed in Homo sapiens. Over the past 100,000 years, the average brain size of our species has decreased. But why?
Source: Krone
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