U.S. Department of Commerce - Environmental Data

• Weather data
• Climate monitoring
• Fisheries management

U.S. Geological Survey - Science Explorer

• Topical directory for ways to browse USGS science programs and activities; explore by data, news, images, video, social media
• Publications Warehouse - "Pubs Warehouse provides access to over 160,000 publications written by USGS scientists over the century-plus history of the bureau"

Gateway to U.S. Federal Science - Science.gov

• "Science.gov searches over 60 databases and over 2,200 scientific websites (from various agencies) to provide users with access to more than 200 million pages of authoritative federal science information including research and development results."

ECOLEX - designed as a comprehensive global source of information on national and international law, operated jointly by FAO, IUCN, and UNEP.