Yuval Noah Harari is a historian, philosopher and the global bestselling author of Sapiens, Homo Deus, 21 Lessons for the 21st Century, the graphic adaptation series Sapiens: A Graphic History, and Unstoppable Us, his first series of books for children. His books have sold over 55 million copies in 65 languages. He co-founded Sapienship - an international social-impact company focused on education and storytelling - with his husband, Itzik Yahav. Harari has a PhD from the University of Oxford and is currently a history professor at the Hebrew University of Jerusalem and a distinguished research fellow at the University of Cambridge's Centre for the Study of Existential Risk.