Recently a video went viral of a baby talking - or babbling - with a Liverpool accent. Professor Julian Pine from Liverpool University explains how babies and young children learn language, including the rules we take for granted. Including the surprising reasons who children make mistakes like saying "nana" instead of banana, or "I play football yesterday" instead of "I played football yesterday." Plus, did you know verbs and nouns go to different parts of the brain?

Produced for BBC Audio in Bristol by Sally Heaven