Alex Rosenberg includes new material on a number of subjects, including: * the theory of natural selection * Popper, Lakatos and Leibniz * feminist philosophy of science * logical positivism * the origins of science In addition, helpful features add greatly to ease and clarity of this second edition: * overviews and chapter summaries * study questions and annotated further reading * a helpful glossary explaining key words and concepts ture, methods and justification.