Reference
NSSN: A National Resource for Global Standards
[ http://www.nssn.org/ ]
Search engine providing standards-related resources and information from private, government and international organizations. Includes tracking and automated reporting
Extreme Science
[ http://www.extremescience.com/ ]
Providing information on technology, earth and space science. Also offers records, calculators, maps, news and online store.
EAA
[ http://eaa.crcpress.com/ ]
Online encyclopedia providing a database of more than 2,750 articles on astronomy and astrophysics. Also offers advanced search.
Botanicus
[ http://www.botanicus.org/ ]
Digital library offering a database of titles, volumes and pages of historic botanical literature. Features news.
Encyclopedia of Life (EOL)
[ http://www.eol.org/ ]
Offers information about species present on Earth. Also includes forums, blog, reports, news, press room, videos, events and features. Available in 6 languages.