Is emoji really the world's fastest growing language? (And can it really be said to be a language at all?) Who gets to decide which pictograms get added to the official set of emoji? Do they clarify the meaning of written language or are they dangerously open to misinterpretation? And why did the aubergine emoji get banned from some social media platforms? Michael Rosen and Dr Laura Wright are joined by Professor Vyv Evans to talk all things emoji. Producer: Mair Bosworth.