Dana Suskind, MD, is founder and co-director of the TMW Center for Early Learning + Public Health, director of the Pediatric Cochlear Implant Program, and professor of Surgery and Pediatrics at the University of Chicago. Dr. Suskind is the author of over forty-five scientific publications and Thirty Million Words: Building a Child's Brain. She is a member of the American Academic of Pediatrics and a fellow for the Council on Early Childhood. Her work has been profiled by numerous media outlets, including The New York Times, The Economist, Forbes, NPR, and Freakonomics.

Lydia Denworth is an award-winning science writer and a contributing editor at Scientific American. She is the author of several books of popular science including Friendship: The Evolution, Biology and Extraordinary Power of Life's Fundamental Bond and I Can Hear You Whisper: An Intimate Journey Through the Science of Sound and Language.