The online catalog of materials owned by Penn State Libraries.
Includes books, ebooks, videos, periodicals, maps, music, digitized works, microfilm titles, and other formats that are in the University Libraries' collections.
Note: you will not find articles from newspapers, magazines, or journals in the library catalog.
Coverage: Presently contains about 7 million titles. Updates: Hourly as new records are added or updated.

Google Scholar enables you to search specifically for scholarly literature, including peer-reviewed papers, theses, books, preprints, abstracts and technical reports from all broad areas of research. Use Google Scholar to find articles from a wide variety of academic publishers, professional societies, preprint repositories and universities, as well as scholarly articles available across the web. Once you set your institutional preferences, links to full-text, if available at Penn State, should appear.

GreenFILE is a database focusing on the relationship between human beings and the environment, with information on topics ranging from global warming to recycling to alternate fuel sources and beyond. Comprised of scholarly and general interest titles, as well as government documents and reports, GreenFILE offers a unique perspective on the positive and negative ways humans affect the ecology. Drawing on the connection between the environment and disciplines such as agriculture, education, law, health and technology, GreenFILE will serve as an informative resource for anyone concerned about the issues facing our planet.

GREENR (Global Reference on the Environment, Energy, and Natural Resources) is an interdisciplinary resource that offers content on the development of emerging green technologies and discusses issues on the environment, sustainability and more. It is interactive and current, allowing users to navigate issue, organization and country portals.

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.

Environment & Energy Publishing (E&E) is the leading source for comprehensive, daily coverage of environmental and energy policy and markets. E&E's five daily online publications - ClimateWire, E&E Daily, E&E PM News, EnergyWire and GreenWire, are considered "must-reads" by people who track and influence energy, environmental and climate policy. The newsletters cover legislative, regulatory, and policy issues. E&E TV provides webcast programs featuring in-depth interviews and analysis with energy and environmental policy leaders. The Land Letter archive is included along with E&E Special Reports, which provide in-depth subject reports on current hot topics.

Ecology Abstracts focuses on how organisms of all kinds - microbes, plants, and animals - interact with their environments and with other organisms. Also includes works on the impacts of environmental change. Coverage is from 1982 to date.

Featuring the complete archive of the magazine from 1888 to 1994, National Geographic Magazine Archive includes every page and every photograph, providing in-depth coverage of cultures, nature, science, technology and the environment. The database is fully searchable by subject, geography, or image.