The next Science on Tap at the Kiggins Theatre is “The Mother and Child Union: A Musical, Poetic and Scientific Journey, at 7 p.m. March 13. Tickets are $15 to $45 at kigginstheatre.com. This event explores the ways that motherhood changes the brains of both mothers and children throughout their lives. Author, public speaker and neuroscientist Dr. Larry Sherman will discuss how a mother’s brain changes during pregnancy and after birth, the neuroscience of the bonding that occurs in the brains of both and what happens when mothers sing to their children. These discussions will be highlighted by music performed by singer-songwriter Naomi LaViolette along with readings of the poetry of Ann Taylor, Nikita Gill, Margaret Hasse and Alice Walker as well as visual art that celebrates motherhood.