While philosophy of science has always been an integral part of philosophy, since the beginning of the twentieth century, it has developed its own structure and its fair share of technical vocabulary and problems. Current debates revolve around deep conceptual and methodological issues in the individual sciences (physics, biology etc.) and also around equally deep questions concerning science in general, its central concepts, its methods, its claim to knowledge and its aims. "Philosophy of Science A-Z" gives concise, accurate and illuminating accounts of key positions, concepts, arguments and figures in the philosophy of science. It aids understanding of current debates, explains their historical development and connects them with broader philosophical issues. It presupposes little prior knowledge of philosophy of science and is equally useful to the beginner, the more advanced student and the general reader. Readers will find in it illuminating explanations, careful analysis, relevant examples, open problems and, last but not least, precise arguments. Philosophy of science is a flourishing discipline and "Philosophy of Science A to Z" is a practical and imaginative way into and through it.