We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleCircadian rhythms. Marking time for a kingdom.AuthorsYoung MWPublicationScience (New York, N.Y.), 2000, Vol 288, Issue 5465, p451ISSN0036-8075Publication typearticleDOI10.1126/science.288.5465.451