As part of our 'A Sustainable Future' policy project, the Microbiology Society's policy team have produced three special episodes of Microbe Talk to explore the role of microbiology to address some of the world’s biggest challenges. This episode, Eva speaks with Professor Alison Smith Head of the Department of Plant Sciences at the University of Cambridge and Emilia Wojcik, PhD student at the University of Manchester to find out how their research contributes to moving towards a circular economy as part of the United Nations Sustainable Development Goals (UN SDGs).