During human birth, the fetus typically navigates a tight, convoluted birth canal by flexing and rotating its head at various stages. This complex process comes with a high risk of birth complications ...

The relatively narrow human birth canal presumably evolved as a 'compromise' between its abilities for parturition, support of the inner organs, and upright walking. But not only the size of the birth ...

Scholars often explain that human immaturity and lengthy childhoods came about because of the need for cultural learning—the manners, mores, and conventions of a particular culture. Surely culture is ...

Scholars often explain that human immaturity and lengthy childhoods came about because of the need for cultural learning—the manners, mores, and conventions of a particular culture. Surely culture is ...

Childbirth in humans is much more complex and painful than in great apes. It was long believed that this was a result of humans' larger brains and the narrow dimensions of the mother's pelvis.