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 ...

As the chair of the department of obstetrics and gynecology at UT Southwestern Medical Center, Catherine Spong is used to seeing a lot of baby bumps. But through her decades of practice, she’s been ...

3D simulation of the birth canal of chimpanzees with (B) the fetal head in a fully extended position, the typical head alignment in apes, and (C) the fetal head in a fully flexed position, the usual ...

According to a new study, chimpanzees, like humans, must contend with a confined bony birth canal when giving birth. In humans, the problem was exacerbated by our unique form of upright walking since ...