In a special recording at the Hay Festival, Michael Rosen talks to bilingual Welsh radio and television presenter Huw Stephens about the Welsh language. And then Huw gets Michael to try reading 'Dyn Ni yn Mynd i Hela Arth, also known as We're Going on a Bear Hunt.

Michael Rosen hears the fascinating story of the origin of all Indo-European languages from Laura Spinney, the author of Proto: How One Ancient Language Went Global. Today, nearly half of humanity speaks an Indo-European language and Laura has been investigating how that came to be.

The use of punctuation is rapidly changing within the quickfire back-and-forth of instant messaging. Are these changes causing misunderstandings? Presenter Michael Rosen and his guest Dr Christian Ilbury discuss. Is the full stop on the way out? What about capital letters? Exclamation marks and question marks seem to be holding their ground, but what about the rest?

Produced for BBC Audio Bristol by Becky Ripley, in partnership with The Open University.

Michael Rosen talks to sociolinguist Philip Seargeant from the Open University about where our street names come from, including Whip-Ma-Whop-Ma-Gate in York, and Michael's old address, Love Lane. Also, have you ever thought about the difference between a street and a road? Are there regional differences in the names given to streets? And why are street names sometimes changed?

Producer: Sally Heaven

Michael Rosen explores the evocative Old English words used in daily life a thousand years ago, many of which are still in use now. He's joined by the linguist author of The Wordhord, Hana Videen. Hana has been hoarding words from Old English (450 AD to 1150 AD) for a decade, when she began tweeting one a day. Now she has lots of people following her to find out more about the language, and a new book out called The Deorhord: An Old English Bestiary.

https://oldenglishwordhord.com

Produced for BBC Audio Bristol by Beth O'Dea.

Michael Rosen's parents both grew up in the East End, and now he talks cockney with Andy Green and Saif Osmani from the Modern Cockney Festival. Including some mythbusting about rhyming slang, a discussion about how cockney has evolved, and of course a mention of Dick van Dyke.

The Modern Cockney Festival takes place from March 1st to 31st with a month-long programme of online and offline activities.

Produced for BBC Audio Bristol by Sally Heaven

David Adger is Professor of Linguistics at Queen Mary University of London. He's created new languages for TV series and films and he explains to Michael Rosen how he goes about it. For his latest language he used existing Creole languages for his 'conlang', or constructed (artificial) natural language. He talks Michael through the grammar and language principles he applies to his creations and lets him try his hand at the monsters' language he invented for a televised version of Beowulf.

Producer: Maggie Ayre

Professor Louise Mullany talks to Michael Rosen about politeness, and how it governs our lives, from the behaviour of football managers to the different ways children can embarrass us. Why, in this country at least, is it so mortifying to mistakenly assume someone is pregnant, when in other cultures it's simply thoughtful to book two seats on a plane for a larger person. Starring Michael Rosen as Spanish football manager Unai Emery, the politest man in football.

Produced for BBC Audio Bristol by Sally Heaven

Poet Jackie Kay has written a book in Scots: Coorie Doon: A Scottish Lullaby Story. She joins presenter Michael Rosen to talk about her love of the language and what it meant to her growing up.

Adam Rutherford joins Michael Rosen to make sense of the heavily-loaded and often unscientific language that we use to talk about genetics, inheritance, ancestry and race. Adam is a geneticist, science writer, and lecturer in Biology and Society at University College London. His work tries to make sense of what our genes do (or don't) tell us about our similarities and our differences. He writes about this stuff in many of his books, including ‘How To Argue With A Racist’ and ‘Where Are You Really From?’

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Produced for BBC Audio Bristol by Becky Ripley