For decades, one idea has shaped discussions about human evolution and birth: humans endure unusually difficult childbirth ...

The tight fit of a baby's head through a mother's birth canal, which causes great difficulty in childbirth, is not unique to humans, as previously understood.

Human birth has a reputation for danger. The usual explanation is simple enough: walking upright narrowed the pelvis, while evolution also favored babies with large ...

Learn how 3D models of primate birth canals found that squirrel monkeys, bushbabies, and other small species may face a ...

Women who have been exposed to multiple traumatic experiences during childhood have more difficult births than others. They are much more likely to need emergency cesarean sections, suffer major ...

The tight fit of a baby's head through a mother's birth canal, which causes great difficulty in childbirth, is not unique to humans, as previously understood. Instead, some small-bodied primate babies ...

Human childbirth is commonly viewed as uniquely difficult and dangerous. The reason: The combination of bipedalism and large brains creates a tight fit between the baby and the birth canal. Research ...

Difficult birth has been recorded in species that seem, at first glance, to have little in common with humans. Even whales and dolphins show obstructed births, despite lacking a fully formed bony ...