Add Yahoo as a preferred source to see more of our stories on Google. Human childbirth may not be unique, a new review finds similar birth risks across many mammals. (CREDIT: Shutterstock) Human birth ...

For decades, one idea has shaped discussions about human evolution and birth: humans endure unusually difficult childbirth because large-brained babies must pass through a relatively narrow pelvis ...

Learn how 3D models of primate birth canals found that squirrel monkeys, bushbabies, and other small species may face a tighter squeeze than humans. A diagram drawn by a primatologist in the 1940s has ...

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 has long been considered especially risky, owing to upright bodies with large brains moving through narrow birth canals, but it turns out we're no outliers: difficult births are ...

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 ...

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 ...

Human childbirth is risky, but it may not be uniquely risky. Instead, the research suggests that difficult birth is part of a wider mammalian pattern, one rooted in trade-offs that evolution has not ...