HumansHuman heads have changed shape a lot in the past 100 years 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 News
HumansHumans are the only primates with a chin – now we finally know why Biologists have debated the reason why Homo sapiens evolved a prominent lower jaw, but this unique feature may actually be a by-product of other traits shaped by natural selection News