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. STEaPP's research spans STEM and social sciences and is concerned with the role of STEM knowledge in public decision-making at the local, national and international levels. Doctoral students typically work across two UCL departments, with a public policy focus at STEaPP and an applied methodological focus in a sister department within UCL BEAMS (the UCL Faculties of the Built Environment, Engineering Sciences, and Mathematical & Physical Sciences). STEaPP is growing rapidly and aims to be a global leader engaged in exploring, experimenting with, and improving the ways in which scientific and engineering expertise and knowledge inform public decision-making and policy processes, across all levels, sectors and cultures of our interdependent societies. Graduates may choose to concentrate on an academic career or are likely to be attractive to employers as scientific advisers.