This webinar: 1) introduced the IGSN, outlining its structure, use, application and availability for Australian researchers and research institutions 2) discussed the international symposium "Linking Environmental Data and Samples". Speakers: -- Dr Jens Klump, OCE Science Leader, Earth Science Informatics, CSIRO -- Dr Lesley Wyborn, Adjunct Fellow, National Computational Infrastructure Facility and Research School of Earth Sciences at ANU About IGSN Do you or your institution collect physical samples in the course of research? Are you interested in how you can reference these online using a world standard, globally unique persistent identifier scheme? The International Geo Sample Number (IGSN) is a unique identifier that preserves the identity of a sample even as it is moved from lab to lab and as data appear in different publications. It applies to any physical samples, not just samples from the earth. This webinar is the second in a series examining persistent identifiers and their use in research.