Share 'Complex human childbirth and cognitive abilities are a result of walking upright'

Childbirth in humans is much more complex and painful than in great apes. It was thought that this was a result of humans' larger brains and the narrow dimensions of the mother's pelvis. Researchers have now used 3D simulations to show that childbirth was also a highly complex process in early hominins that gave birth to relatively small-brained newborns—with important implications for their cogn…