A transnational approach to understanding and analyzing knowledge circulation. The contributors to this collection focus on what happens to knowledge and know-how at national borders. Rather than treating it as flowing like currents across them, or diffusing out from center to periphery, they stress the human intervention that shapes how knowledge is processed, mobilized, and repurposed in transnational transactions to serve diverse interests, constraints, and environments.The chapters consider both what knowledge travels and how it travels across borders of varying permeability that impede or facilitate its movement. They look closely at a variety of platforms and objects of knowledge, from tangible commodities—like hybrid wheat seeds, penicillin, Robusta coffee, naval weaponry, seed banks, satellites and high-performance computers—to the more conceptual apparatuses of plant phenotype data and  statistics.Moreover, this volume decenters the Global North, tracking how knowledge mo