Neuroscientist Patricia K. Kuhl explains why a baby’s brain holds the key to understanding what it means to be human.
Learn more about how babies' brains develop during the first year online in National Geographic magazine's "Firsts" issue:
http://goo.gl/gImy2q
PHOTOGRAPHER: Lynn Johnson
VIDEOGRAPHERS: Lynn Johnson and Hayes Baxley
PRODUCER AND EDITOR: Kathryn Carlson
With thanks to You Tube
