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 ...

Childbirth is often described as one of humanity’s defining biological challenges, but new research suggests the story is far ...

Human fingers and toes do not grow outward; instead, they form from within a larger foundational bud, as intervening cells recede to reveal the digits beneath. This is among many processes captured ...

Newborn babies' brains aren't "underdeveloped" compared with those of other primates at birth, a new study suggests. In the past, scientists typically compared brain development between species by ...