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 ...

Watching the snow fall outside her bedroom window while holding her newborn, as her husband brought her a cheeseburger and an old fashioned, Hope Payton-Carrillo had no doubt that home birth was the ...

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 ...