Alice Callahan holds a PhD in nutritional biology from the University of California, Davis, and spent two years investigating fetal physiology as a postdoctoral scholar. The creator of the blog Science of Mom: The Heart and Science of Parenting, she writes and teaches in Eugene, Oregon.
Suzanne Toren is an actor who has appeared on and off Broadway, in regional theaters, and occasionally on TV. Over a period of several decades, she has narrated close to 1000 audiobooks for most major publishers. She has received multiple Audie nominations and many industry awards, including Narrator of the Year.