Humans
Human brains may have got bigger for no particular reason
Our brains are large compared with other animals, so it is tempting to assume there was an evolutionary advantage to them – but that may not be true at all
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Our brains are large compared with other animals, so it is tempting to assume there was an evolutionary advantage to them – but that may not be true at all
Since the early 20th century, people’s skulls have got rounder and their jaws have got wider, probably because of changes in health, diet and environment