PubMed comprises more than 35 million citations for biomedical literature from MEDLINE, life science journals, and online books.

ERIC is a comprehensive, searchable, Internet-based bibliographic and full-text database of education research and information.

The National Service Center for Environmental Publications (NSCEP) is the Agency’s central repository and distribution center for EPA publications. NSCEP maintains an inventory of 5,000 current EPA publications available to the public free of charge.

OSTI.GOV is the primary search tool for Department of Energy (DOE) funded science, technology, and engineering research and development (R&D) results.