Research journals are increasingly being published digitally. The advantage of digital publishing is obvious: immediate accessibility anywhere. Gradually a disadvantage is also becoming clear: digital publishing endangers the continuity of research information. As a consequence of the obsolescence of formats, hardware, software, and carriers, digital information will be lost unless we act. Digital publishing is also causing a shift in the roles and responsibilities of publishers and libraries concerned with archiving digital publications for future use. Archiving digital publications requires a major turnaround in the policy and practice of national libraries. Although some actions have been taken, digital preservation research and implementation are still in their infancy. National libraries will need substantial funding for venture research activities and development of archival infrastructures. They will also have to work together more closely to successfully organize digital archiving in the twenty-first century.