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.
Joana Garcia is a retired military officer with twenty years of active duty under her belt. She spent most of her adult life fixing fighter jets on aircraft carriers as a US Navy aviation maintenance officer. Her warm, rich, and graceful voice can be heard in over sixty titles in multiple genres, fiction and nonfiction.