Professor Oren Harman is Senior Research Fellow at the Van Leer Jerusalem Institute, and teaches at the Graduate Program in Science Technology and Society at Bar Ilan University. He was trained in history and biology at the Hebrew University, Oxford, and Harvard, and is a historian of science and a writer.

Sam Leith is Literary Editor of the Spectator. He has written extensively for the Guardian, TLS, Financial Times, Telegraph and Daily Mail, and was a judge for the 2015 Man Booker Prize. Image © Mark Rusher