Human birth is far more challenging than that of other primates. In 1960, anthropologist Sherwood Washburn proposed a widely accepted explanation for the tight squeeze a baby experiences passing ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Human newborns arrive remarkably underdeveloped. The reason lies in a deep evolutionary ...

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 ...

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 ...

A human baby arrives in the world in a strange state, eyes open, ears working, brain growing fast, yet unable to move through the world in any meaningful way. That mix is the heart of a new argument ...

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 ...

A human pelvis and muscles of the pelvic floor, which span the bony pelvic canal. The model (1, transparent cyan) used in the analysis is shown superimposed on the ...

People don’t believe it when I mention how much I loved labor and delivery. They think I’m talking about my career as a nurse-midwife helping others, not my own experiences. They’re partially right—I ...