Human newborns arrive remarkably underdeveloped. The reason lies in a deep evolutionary trade-off between big brains, bipedalism and the limits of motherhood.

The female pelvis may become too narrow for vaginal childbirth, meaning that caesareans could become the only option for delivering babies. At least, that’s the claim made by a research team last year ...

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 ...