Pop quiz: When does learning begin? Answer: Before we are born. Science writer Annie Murphy Paul talks through new research that shows how much we learn in the womb -- from the lilt of our native language to our soon-to-be-favorite foods.img src="http://feeds.feedburner.com/~r/TEDTalks_video/~4/0mnZqkQG-_A" height="1" width="1"/