1) Babies begin listening to their mothers’ speech in the womb.
2) A mother’s saliva might be good for a baby’s health.
3) Breast milk confers all sorts of immune system benefits — and may even protect against HIV.
4) For premature babies, skin-to-skin contact with a mother improves health.
5) A mother’s brain may contain cells from her children.
6) The word “mother” might date to the end of the Ice Age.