Web of Science provides access to: the Science Citation Index Expanded 1900-present; the Social Sciences Citation Index 1956-present; and the Arts & Humanities Citation Index 1975-present. Web of Science indexes articles from thousands of journals and also indexes the citations used in those articles, thus allowing the user to see which papers have cited a core paper, and how many times a paper was cited in a given time period. Covers published content is almost every discipline.

The Environmental Sciences Collection provides abstracts and references to the environment literature covering all areas of air, land, water, and noise pollution as well as bacteriology, ecology, toxicology, risk assessment, environmental engineering, environmental biotechnology, waste management, and water resources from 1967 to the present.

SciFinder-n indexes the chemical literature as well as providing searchable information regarding specific chemical substances, reactions, structure and substructure searching, chemical supplier information, and a retrosynthesis planner.
Special Access Notes: Global Protect VPN required for remote access.
When accessing SciFinder-n, users will need their Penn State access credentials as well as a separate SciFinder-n login and password, which they can obtain using on-screen instructions. Register for a SciFinder-n Account.

TOXLINE offers rapid access to information in all areas of toxicology, including chemicals and pharmaceuticals, pesticides, environmental pollutants, and mutagens and teratogens.

Compendex is the most comprehensive interdisciplinary engineering database in the world with over 9 million records referencing 5,000 engineering journals and conference materials dating from 1884.

Worldwide Political Science Abstracts is building on the merged backfiles of Political Science Abstracts, published by IFI / Plenum, 1975-2000, and ABC POL SCI, published by ABC-CLIO, 1984-2000. The database provides citations, abstracts, and indexing of the international serials literature in political science and its complementary fields, including international relations, law, and public administration / policy. The serials list of the new database is actively under construction, with a focus on expanding international coverage. As of February 2004 approximately 1,432 titles are being monitored for coverage; this list will continue to grow.