This book is a follow up to Goitre Monitor: The History of Iodine Deficiency in Tasmania, published in 2006. Since that time climate change has played a major role in the delivery and availability of iodine to land masses, along with the role of iodophors and the mandatory fortification of bread with iodised salt in Australia and New Zealand over the past 15 years. Several academic colleagues have been invited to discuss the status of iodine from the UK, NZ and Australian perspective in individual chapters, as well as a contribution to the final chapter which discusses 'What the Future Holds' for the delivery and availability of iodine to sustain sufficiency and avoid deficiency of iodine in a changing world.