Emojis are the world's newest language - but where did they come from, where are they going, and what do they mean?
We are surrounded by emoji. They appear in politics, movies, drug deals, and even our sex lives.
In his new book Face with Tears of Joy: A Natural History of Emoji writer Keith Houston explores the history of the emoji from its birth in 1990s Japan, through to the Western explosion in the 2000s.
Keith Houston is an author of several books about punctuation and the founder of the blog Shady Characters. He joins Susie to explain the ever-expanding emoji lexicon.
Photo: Supplied/W.N.Norton