Roberto Refinetti received his doctoral degree in biopsychology from the University of California at Santa Barbara in 1987 and conducted postdoctoral research at the Center for Biological Timing at the University of Virginia. His research program in circadian physiology, which concentrates on the integration of circadian and homeostatic mechanisms, has been funded by the National Science Foundation and the National Institutes of Health, and has led to the publication of over 200 articles in professional journals. In 1996 he launched his laboratory's web site (www.circadian.org); in 2000 he published the book Circadian Physiology (CRC Press, 2000); and in 2003 he spearheaded the creation of the Journal of Circadian Rhythms as its Editor-in-Chief.