Doctoral study at UCL's Department of Science, Technology, Engineering, and Public Policy (STEaPP) offers the opportunity to become a world-class interdisciplinary researcher at the interface of science and public policy. Students investigate and experiment with the ways science and engineering knowledge shapes decision-making and helps to address today's major global challenges. Doctoral study at UCL’s Department of Science, Technology, Engineering, and Public Policy (STEaPP) offers the opportunity to become a world-class interdisciplinary researcher at the interface of science and public policy. Candidates investigate and experiment with the ways science and engineering knowledge shape decision-making and help to address today’s major global challenges.Research at UCL STEaPP is focused on co-production: we bring together academic, governmental, civil society and industry partners to tackle the pressing challenges facing our societies today and create opportunities to address them. Doctoral research is embedded within the different research groups. STEaPP draws together expertise on the analytic tools of the natural and engineering sciences, as well as those of social sciences, political sciences and policy analysis. Our research aims to help illuminate and better understand the societal systems through which knowledge flows (or does not) and in which it is used (or not).