The Research Expo is a biennial event at St Edmund Hall, designed to showcase the breadth of research carried out at the College, by both academics and students. This series includes an overview video introducing the event, and then a set of short ‘Teddy Talks’ on a wide range of topics from gravitational waves to medieval history, all aimed at a non-specialist audience. The speakers are academics or postgraduate students at St Edmund Hall (also known as ‘Teddy Hall’), one of the colleges of the University of Oxford.