Dr Thomas Bak talks about the neuroscience of languages, how our brains store and process multiple languages and have evolved to do so easily, and how monolingualism actually deprives the brain of useful mental exercise that staves off dementia symptoms and help speed up cognitive recovery after stroke. We discuss the UK languages crisis, and the inaugural International Day of Multilingualism on 27th March 2019, and how changing the UK census question about languages would help change UK attitudes to languages. Listen here or on your usual podcast provider.