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1933-Present (Worldwide coverage); 1693-Present (North American coverage). Abstracts. Includes all areas of geology, geochemistry, geochronology, geophysics, hydrogeology and hydrology, marine geology and oceanography, mineralogy and crystallography, paleontology, petrology, seismology, and stratigraphy.
1970s - present. Mostly abstracts; some full text. Covers all aspects of human impact to the environment. Its collection of scholarly, government and general-interest titles includes content on global warming, green building, pollution, sustainable agriculture, renewable energy, recycling, and more.
1869-Present. Fulltext and PDF since 1950; Archive in PDF. Covers all fields of science and technology. Most-cited weekly science journal. Features podcasts of a weekly science show, a news blog, and videos in which authors discuss their research.
(Note: does not currently support Internet Explorer 9.) Includes SCIENCE CITATION INDEX EXPANDED (1900 - present ), SOCIAL SCIENCES CITATION INDEX EXPANDED (1956 - present), and ARTS & HUMANITIES CITATION INDEX (1975 - present). All subjects are covered. Indexes articles from almost 10,000 journals as well as the citations in the articles indexed. Recent years include abstracts.
A global science gateway linking national and international scientific databases and repositories. This site allows users to search scientific information collected from around the world. Much of the information in this database is not available via conventional web searching.