The British Library knows that the English language is far from a static entity, and in their exhibition "Evolving English" they have gathered a number of guests to talk about the world of English and its contemporary usage. There are five podcasts available and they present a cornucopia of material on the evolution of the English language, including: "How do jokes work?", "English: the World's Language?", and "Voices of Rap and Hip Hop". The "How do jokes work?" podcast is a good place to start and the panelists include C.P. Lee, Barry Cryer, and Tim Vine. The material is insightful, although visitors should note that the podcast on rap and hip hop occasionally uses rather strong language.