Index from the American Geological Institute to journals and other publications in geoscience.
Enormous index to scholarly journals in all disciplines. Includes Science Citation Index Expanded, Social Sciences Citation Index and Arts & Humanities Citation Index from the first issue to the present. Provides the ability to search on cited references as well as more typical search criteria.
Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: peer-reviewed papers, theses, books, abstracts and articles, from academic publishers, professional societies, preprint repositories, universities and other scholarly organizations.
Archive of index to papers in physics, electrical engineering, electronics, computing and control engineering.
An electronic portal to information on the environment, sustainability, and emerging green technologies, from a global perspective.
ARTstor is a repository of hundreds of thousands of digital images and related data.
Concise background information on nations, updated periodically.
Geographic properties, physical aspects, political properties, infastructure and natural resources of the world.
Science articles for students and the general public; full text from 1994 forward; indexing with abstracts from 1984 forward.
Every page and photograph of the National Geographic magazine from 1888-1994, fully searchable.
Science-specific search engine created by Elsevier Scientific.