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 centuries, childbirth’s pain was explained as punishment; more recently, as the evolutionary price of walking upright and bearing large-brained babies. But if difficult birth occurs across ...

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 ...

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 ...

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 ...

The broader message is unsettling and clarifying at once. Human childbirth is risky, but it may not be uniquely risky. Instead, the research suggests that difficult birth is part of a wider mammalian ...

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 ...