Chemical Reviews Perennial Reviews
The American Chemical Society review journal Chemical Reviews inaugurates Perennial Reviews. Perennial Reviews give authors the opportunity "to keep their review articles current for a period of up to five years by updating them once or several times," and readers have the opportunity to "keep up with the most recent important results in the field." Updated reviews are listed in the table-of-contents of both the print and online versions, but are only available on the Web, with the new material highlighted.