Science.gov

• Science.gov is a gateway to government science information and research results. Currently in its fifth generation, Science.gov provides a search of over 36 scientific databases and 200 million pages of science information with just one query, and is a gateway to 1,850+ scientific Websites.
  Science.gov 5.0 provides the ultimate science search through a variety of features and abilities, including:
  Accessing over 36 databases and 200 million pages of science information via one query
  Clustering of results by subtopics or dates to help you target your search .
• Wikipedia results related to your search terms
  Eureka News results related to your search terms
  Mark & send option for emailing results to friends and colleagues
  More science sources for a more thorough search
  Enhanced information related to your real-time search
  New look and feel
  Updated Alerts service
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  The content for Science.gov is contributed by participating agencies, which are listed below, committed to serving the information needs of the science-attentive citizen, including science professionals, students and teachers, and the business community. Many of these agencies are members of CENDI, which provides administrative support and coordination for science.gov.
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  Participating Agencies
  The following 17 scientific and technical organizations from 13 federal agencies contribute to science.gov.
  1. Department of Agriculture
  National Agricultural LibraryUnited States Forest Service
  2. Department of Commerce
  National Institute of Standards and TechnologyNational Technical Information Service
  3. Department of Defense
  Defense Technical Information Center
  4. Department of Education
  National Library of Education
  5. Department of Energy
  Office of Scientific and Technical Information
  6. Department of Health and Human Services
  Food and Drug AdministrationNational Institutes of Health National Library of Medicine
  7. Department of Interior
  United States Geological Survey National Biological Information Infrastructure
  8. Environmental Protection Agency
  Office of Environmental Information Office of Research and Development
  9. Library of Congress
  10. National Aeronautics and Space Administration
  Scientific and Technical Information Program
  11. National Science Foundation
  12. United States Government Printing Office
  With additional support from the National Archives and Records Administration
  Science.gov and the Science.gov Alliance were formed in response to the April 2001 workshop, "Strengthening the Public Information Infrastructure for Science."
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  The Web page search function is provided by the U.S. Geological Survey (USGS), and the "Explore Selected Science Websites by Topic" portion of the site is maintained by the CENDI Secretariat. The Science.gov Website is hosted by the Department of Energy (DOE) Office of Scientific and Technical Information (OSTI), located in Oak Ridge, Tennessee, which also supplies the site's "deep Web search" capability.
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  History
  Science.gov 1.0 was launched in December 2002, providing for the first time wide public access and a unified search of the government's vast stores of scientific and technical information. Science.gov is an interagency initiative of 17 U.S. government science organizations within 13 Federal agencies. These agencies form the voluntary Science.gov Alliance.
  In May 2004 Version 2.0 was launched, introducing real-time relevancy ranking to government science retrieval. This technology, funded by the Department of Energy, helps citizens sort through the government's reservoirs of research and return results most likely to meet individual needs. An advanced search capability and other enhancements were added.
  A free and convenient "Alert" service was released in February 2005, allowing citizens to receive e-mail alerts about the most current science developments in their areas of interest. Up to 25 relevant results from selected information sources can be delivered. Results are displayed in the Alert email and in a personalized Alert Archive, which stores six weeks of alerts results. In the Archive, past activity can be reviewed and Alert profiles edited.
  Science.gov 3.0 took relevancy ranked search to a higher level of precision. Launched in November 2005, Version 3.0 provided more refined search queries of federal science databases. In addition, greatly enhanced fielded searching and the extensive Boolean capabilities offer new search options for Science.gov users.
  In February 2007, Science.gov 4.0 was launched, which allowed even further refinement of search queries. For the first time, patrons could search within their original results. In addition, the relevancy ranking algorithms became more sophisticated, providing ranking of the entire full text of documents on sites where searchable full text resides. Date of the document was priority-weighted for ranking purposes. A new feature allows patrons to share search results via e-mail with colleagues and friends.
  Science.gov 5.0 was launched in September 2008 and boasts several new and innovative features. Clustering, the grouping of results into meaningful topics, helps guide patrons to desired information. Science.gov results have also been enhanced by the addition of Wikipedia topics and EurekAlert items related to the search. Additionally, selected results can be emailed to colleagues and friends, and the overall look and feel has been updated.
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  This weblink explore selected science websites by following topics:
  1. Agriculture & Food ( http://www.science.gov/browse/w_105.htm)
  Food Safety, Gardening, Pesticides, Veterinary Science ...
  2. Applied Science & Technologies (http://www.science.gov/browse/w_113.htm)
  Biotechnology, Electronics, Engineering, Transport ...
  3. Astronomy & Space (http://www.science.gov/browse/w_110.htm)
  Exploration, Planets, Space Technologies ...
  4. Biology & Nature (http://www.science.gov/browse/w_115.htm)
  Animals & Plants, Ecology, Genetics, Pest Control ...
  5. Computers & Communication (http://www.science.gov/browse/w_117.htm)
  Networks, Hardware, Software ...
  6. Earth & Ocean Sciences (http://www.science.gov/browse/w_119.htm)
  Land, Maps, Natural Disasters, Oceans, Weather ...
  7. Energy & Energy Conservation (http://www.science.gov/browse/w_121.htm)
  Energy Use, Fossil Fuel, Solar, Wind ...
  8. Environment & Environmental Quality (http://www.science.gov/browse/w_123.htm)
  Air/Water/Noise Quality, Cleanup, Climate Change ...
  9. Health & Medicine (http://www.science.gov/browse/w_127.htm)
  Disease, Health Care, Nutrition, Mental Health ...
  10. Math, Physics, & Chemistry (http://www.science.gov/browse/w_129.htm)
  Astrophysics, Chemicals, Mathematical Modeling ...
  11. Natural Resources & Conservation (http://www.science.gov/browse/w_131.htm)
  Ecosystems, Energy Resources, Forest Science, Mining ...
  12. Science Education (http://www.science.gov/browse/w_133.htm)
  Homework Help, Teaching Aids, Science Internships ...