In which we metaphorically enter the UCLA Language Acquisistion Lab's recording castle, guided by linguistics researcher Dr. Megha Sundara. NPR science correspondent Sydney Lupkin temporarily takes over the host chair to talk to Sundara about all things baby babble. Along the way, we learn why babies babble, how that babbling can change with exposure to new languages — and if there are any lessons for adults. Questions about other ways we develop? Email us at shortwave@npr.org and we might answer it in a future episode!