Abstract
Our 2003 proceedings are now written in stone, thanks to the impetus of the SARS outbreak just before we were scheduled to meet in Toronto. The submitted abstracts made clear that there were several new findings of fundamental importance to the field of circadian regulation, melatonin and seasonal affective disorder; these have now been described in the set of peer‐reviewed reports that follow this overview. Here we present a critical summary of this work, organized into general topic areas of interest to the Society. As a guide to readers, we refer to items in the collection by topic section and order within section (e.g., #3.6), with the abstract number placed before each abstract title. Citations of earlier literature are found in the References.