The increasing cultural significance of the natural sciences presents conceptual history with the task of reorganising its categories and methods. The greatest challenge here is the merging of conceptual history and the history of science and the integration of the natural sciences in the project of an interdisciplinary cultural history. The present volume is the first to tackle this desideratum in a systematic manner. The contributions by renowned representatives of the most disparate disciplines bear witness both to the diversity of the new perspectives and to the difficulties of such an undertaking.