Robert Waller is currently Chief, Conservation at the Canadian Museum of Nature. He holds a PhD in Conservation from Göteborg University Institute of Conservation and Professional Accreditation with the Canadian Association of Professional Conservators. Research interests have included: the preservation of mineral specimens, especially the effects of relative humidity, temperature and pollutants on minerals; the condition and stability of fluid-preserved collections; the effect of relative humidity on rates of deterioration of materials in general; cultural property risk assessment, analysis and management, and holistic approaches to collection management and preservation. Author of more than 25 scientific and technical papers, chapters, or books on conservation, Robert Waller has taught, lectured, and served as a consultant at dozens of museums, universities, and organizations throughout North and South America, Europe and Asia. He is a fellow of the International Institute for Conservation and is a Past-Chairman of the Canadian Association of Professional Conservators.