The acronym LOST stands for Law, Organization, Science and Technology. Anthropology of Law (L), Organization Studies (O), and Science and Technology Studies (ST) are three vibrant transdisciplinary fields. Working at their intersections and merging their approaches, we also emphasize the economic, political, ethical, and aesthetic dimensions of fact-making in the present. The ambition of our detailed ethnographies is to respond to long-standing questions raised in social theory and philosophy, and vice versa, to translate these questions into ethnographic inquiry with a particular focus on critique. We address questions of global and planetary scope, although several of our empirical projects are located in Africa. Since its founding in 2002, LOST has grown from a small group based in Halle, Germany, to a decentralized network of independent scholars in many countries. Its vibrant activities have been winding down for a few years now, and so this website is slowly turning into an archive.