In discussion about the past and the future of STS studies, insufficient attention is paid to the interdisciplinary character of this interdiscipline. After a brief characterization of the dual past (anchored on one side by Rachel Carson and on the other by Thomas Kuhn) and a glance at contemporary assessments such as the Handbook of Science and Technology Studies, this article references the past and the present of interdisciplinarity, especially as reflected in the scholarship of Julie Thompson Klein. The conclusion (...) seeks to indicate ways in which STS studies can draw on and make a special contribution to interdisciplinarity. (shrink)