"'Science.gov searches over 36 databases and 1,850 selected websites, offering 200 million pages of authoritative U.S. government science information, including research and development results.' Content is provided by 13 federal agencies including the National Science Foundation, Department of Agriculture, and the Environmental Protection Agency.

The site offers both basic keyword and advanced search options. Searching across one or all 12 topics yields ranked results that are clustered by subtopic or date, have links to Wikipedia, and may be sorted by date, title, or author. A summary of all results ranks the sources used in the search. Refining the search, limiting the results, or creating an alert is available from the results page. In addition to searching the entire site for documents, users can explore selected science Web sites from the home page. Sites are selected by information specialists/librarians, and each component is regularly updated. The subject categories on the home page provide links to a wide variety of sites. The main page also includes featured searches and Web sites and links to special collections, including special terminology and thesauri from sources such as DTIC, MeSH, USGS, ERIC, and DOE." from Choice, April 2009