As any parent can attest, the first few years of a child's life are marked by many sleepless nights. However, the expectation that infants should sleep through the night by a certain age is widespread ...

The human brain undergoes significant development during the final prenatal months and through the first year of life. And while scientists have begun to map the developmental trajectories of this ...

ANeanderthal infant who lived more than 50,000 years ago reached the physical size of a modern toddler in just six months.