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You can search these sites, as well as the internet by clicking on the following icon:


To view or navigate this Web site by using a tree, click just click here (Sorry, but the tree only works with Internet Explorer ).

You will be able to see the structure of this Web site along with links to click on to go directly to a certain section of the tree. is an interagency initiative of 17 U.S. government science organizations within 12 Federal agencies. These agencies form the Alliance. Visitors to the site can search across Alliance agency resources via one query.

Each agency selects its best science information for Two major types of information are included — selected authoritative science Web sites and often hard-to-access scientific databases (specific content varies by database). This gateway to government science information allows searches across 30 databases and more than 1,700 science Web sites. currently accesses over 47 million pages of government science information. allows users to search the surface Web as well as the deep Web, where traditional search engines cannot go. The information is free, with no registration required.