POPLINE (POPulation information onLINE), the world's largest database on reproductive health, containing citations with abstracts to scientific articles, reports, books, and unpublished reports in the field of population, family planning, and related health issues. POPLINE is maintained by the K4Health Project at the Johns Hopkins Bloomberg School of Public Health/Center for Communication Programs and is funded by the United States Agency for International Development. POPLINE contains nearly 370,000 records; the majority of items are published from 1970 to the present, however, there are selected citations dating back to 1827. Special features include links to free, full-text documents; the ability to limit your search to peer-reviewed journal articles; RSS feeds for topical searches; and many abstracts in French and Spanish.