The Third International Conference on Isotopes focused on the theme of ?Isotope Production and Applications in the 21st Century? and included presentations by several eminent experts in this field. The three central subjects ? Isotopes in Medicine, Industry and the Environment ? were supplemented by presentations on the latest developments in isotope production and synthesis, research into radiopharmaceuticals, applications in agriculture, analytical applications, radiocarbon dating, AMS and PET. Various views on the future directions for producers and users of isotopes were considered at this multi-disciplinary meeting.