This month we speak to Harry Ritchie, author of Spreading the Word in our August issue, about Proto-Indo-European, the ancestor of almost every language now spoken from the Hebrides to the Himalayas. Also, an interview with Roger Taylor, curator of an exhibition at the V&A on early photography in Burma and India. Listen to the podcast via the embedded player on this page. Mobile and tablet users can listen via the Podcasts app (for iOS); there are also apps for Android (such as Podcast Republic) and Windows (Podcast Lounge). You can also download this episode from iTunes or download it as an MP3.