A collection of more than "20,000 descriptions of Earth science data sets and services covering all aspects of Earth and environmental sciences...

A searchable, selective index of related internet resources, including subjects such as biodiversity and biological informatics...

"A broad, collaborative program to provide increased access to data and information on the nation's biological resources; the NBII links diverse, high-quality biological databases, information products, and analytical tools maintained by NBII partners and other contributors in government agencies, academic institutions, non-government organizations, and private industry...