Aristotle's study of the natural world plays a tremendously important part in his philosophical thought. He was very interested in the phenomena of motion, causation, place and time, and teleology, and his theoretical materials in this area are collected in his Physics, a treatise of eight books which has been very influential on later thinkers. This volume of new essays provides cutting-edge research on Aristotle's Physics, taking into account recent changes in the field of Aristotle in terms of its understanding of key concepts and preferred methodology. The contributions reassess the key concepts of the treatise (including nature, chance, teleology, art, and motion), reconstruct Aristotle's methods for the study of nature, and determine the boundaries of his natural philosophy. Due to the foundational nature of Aristotle's Physics itself, the volume will be a must-read for all scholars working on Aristotle.