When do babies start smiling? While some flash a smile in utero, the typical newborn cracks a grin in relation to an emotional trigger (called a “social smile”) around two months. Still, according to ...

Do you ever wonder what's going through your baby's mind when she smiles at you? Researchers at the University of California, San Diego, think they know. Their study, published in PLOS ONE, suggests ...

Six weeks after giving birth, I finally got a smile from my newborn baby girl. For over a month, I lived in an endless cycle of feedings, diaper changes, and power naps. The smile jolted me out of my ...

Is there anything cuter than a smiling infant? Why yes, there is — a baby smiling in their sleep. Those tiny, twinkling baby grins were one of the many delights I experienced as a new mom. (My babies ...

"It puts a smile on our faces and we thought it could do that for others as well," Lauren Vinje tells PEOPLE What a smile! A photo of grinning Freya Vinje when she was just 5 days old is instilling ...

Why do babies smile when they interact with their parents? Could their smiles have a purpose? In the Sept. 23 issue of PLOS ONE, a team of computer scientists, roboticists and developmental ...