Professor Ian Worthington joins us again to talk about new book about Ptolemy! HOW TO LISTEN If you're already a subscriber, you can listen to the show below or subscribe through iTunes or any podcast player. If you're not a subscriber, please register. If you want to listen to the first episode for free, get instructions here. If you haven't already, join our Facebook page and you'll be in the running to win prizes in our regular “Share The Love” and other competitions. If you'd like to write a funny or insightful review on iTunes, this is the link. The Music: We want to get down on our knees and worshipthe amazing and talented composer who offered us the use of one of his amazing tracks, “Hero”, as our theme music: Jofre Horta. He's already a big deal in the composing world but he's going to be even bigger – and you can say you heard him first on our little show! Listen to his whole album on Spotify or iTunes.