In the latest episode, Dan Aspel speaks to Simon Cox and Adil Mughal - organisers of the 2023 programme "GeomPack: Geometry and packing in material structure and biology". The second ever INI satellite programme, GeomPack is being held at Aberystwyth University in its 150th year. Simon and Adil explain the joys and challenges of organising such an event, as well as the fascinating research which has seen them and the participants tackle "some of the knottiest problems in mathematics for centuries”. PMV programme: https://www.newton.ac.uk/event/pmv/ 00:00 - Introduction 00:58 - Welcome and programme overview, life in Aberystwyth 03:40 - Comparing the experience to events at INI, origins of the GeomPack community 08:40 - Marbles and pint glasses: how to explain packing problems (the Kepler conjecture and "some of the knottiest problems in mathematics for centuries”) 17:00 - The fascination of the “Einstein tile” 19:10 - Learnings from running an INI satellite programme 25:45 - Looking ahead to the future Episode recorded 04/09/23