Prof Yuval Noah Harari has a PhD in History from the University of Oxford and now lectures at the Hebrew University of Jerusalem, specialising in World History. Sapiens: A Brief History of Humankind has become an international phenomenon attracting a legion of fans from Bill Gates and Barack Obama to Chris Evans and Jarvis Cocker, and is published in over forty-five languages worldwide. It was a Sunday Times Number One bestseller and was in the Top Ten for over nine months in paperback. His follow-up to Sapiens, Homo Deus: A Brief History of Tomorrow was also a Top Ten Bestseller and was described by the Guardian as 'even more readable, even more important, than his excellent Sapiens'. His most recent book, 21 Lessons for the 21st Century, was a Number One Bestseller and was described by Bill Gates as 'fascinating' and 'crucial'.