Lewis Dartnell is an astrobiology researcher and professor at the University of Westminster, and also an Honorary Research Associate at University College London (UCL). He is the author of the bestselling books The Knowledge: How to Rebuild Our World from Scratch and Origins: How the Earth Shaped Human History, which has been translated into 26 languages. He writes for the Guardian, The Times and New Scientist. Copies of The Knowledge exist on the surface of the Moon, and in the Svalbard Global Seed Vault. His new book, Being Human, is a unique reframing of human history as shaped by our physical abilities and limitations.