Add Yahoo as a preferred source to see more of our stories on Google. (Blend Images - Peathegee Inc/Tetra Images/Getty Images) Evolutionary theory has revolutionized the way we understand humans – yet ...

Add Yahoo as a preferred source to see more of our stories on Google. While bringing new life into the world is often viewed as one of life's most joyful moments, childbirth continues to pose serious ...

Simulations of Australopithecus hominins’ anatomy suggest that when they gave birth, they may have exerted tremendous ...

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 ...

In fact, it is not only the human newborn’s large head that makes birth challenging. Its shoulders are also quite wide compared to the birth canal, so additional juggling is needed to avoid jamming.

Women’s pelvises have become narrower over the past 150 years, according to a study of over 8000 people from three countries. There are many factors at play, but whatever the ultimate cause, it is the ...

Medical intervention in human birth has become so widespread that spontaneous delivery is an increasingly rare event. Yet convincing evidence reveals an underlying 24-hour biorhythm, reflecting a ...

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 ...