Greg Radick is Professor of History and Philosophy of Science at the University of Leeds. He has published widely on the history of biology and the human sciences after 1800, with particular emphases on Darwin and Darwinism, genetics and eugenics, and the sciences of mind, language and behaviour. He's also pursued more general questions about scientific knowledge, especially to do with history-of-science counterfactuals and intellectual property, narrowly and broadly construed. For a full bibliography, videos of talks etc., go to