Hi - I'm Piers and this is The Thought Exchange. Welcome to the office at the bottom of the garden where I've been connecting with people all over the world to talk to them about their ideas in their work. And I'm really excited about the first episode launching on Monday the 1st of June which is with Professor Donald Johanson. Iwas incredibly privileged to travel to the Afar Desert to the site of the Lucy discovery with him in 2012 to film a series called in a fish for PBS. I hope that I can recreate some of the conversations we had around fireside in camp in the evening or on the long drives in turtle and cruises across the incredible Ethiopian landscape. I really hope I can recreate some of the atmosphere and give you a sense of that visit and those people in that time but also explore the science, the really important science that he's done over the years and his important contribution. So I hope you enjoy!