This one is sure to put a smile on your face -- a team of Japanese researchers found that sleeping baby monkeys could shed light on the origins of laughter and smiles in humans. When either a ...

there’s no need to worry, Odom says. “Every baby doesn’t follow the textbook, and some take up to 4 months to start smiling socially. Social smiling is a part of her social development ...

Although infants can’t speak, mothers seem to know what their babies are thinking: they smile when their baby smiles and they frown when their baby is upset. Research suggests that the mother ...

Lead author Fumito Kawakami caught macaque infants smiling when they were receiving routine health checkups. "These checkups can take quite long, so the infants tend to nap in between," says Kawakami.

In one black and white photo, the father’s smiling face gazes ... Unfortunately, there is no record of how the Greeks and Romans dealt with the inevitable baby poo exploding from the business ...