Literature reviews providing overviews of the principal contributions to scholarship for 41 focused disciplines within the biomedical, life, physical, and social sciences.
The U.S. Geological Survey (USGS) collects information needed to understand the Nation's water resources, and provides access to water data, publications, maps, and recent water projects. Water data by state is also included.
NOAA's National Centers for Environmental Information (NCEI) hosts and provides public access to one of the most significant archives for environmental data on Earth.
Worldwide data sets and products from NOAA's National Oceanographic Data Center (NODC). The WODselect interface allows searching by user-specified criteria.