Mom Genes

Motherhood changes a woman. Birthing reconfigures a mom's brains in ways that tell a scientist she’s a mother, just from looking at a scan. And babies leave behind cells that colonize a mother's organs, skin and bones. Science journalist Abigail Tucker, and mother of four children, shares the science of motherhood in her new book “Mom Genes: Inside the New Science of Our Ancient Maternal Instinct.”