N:
NBIC: National Ballast Information Clearinghouse - Data on the ballast water management practices of commercial ships that operate in the waters of the United States [Smithsonian Institution, Smithsonian Environmental Research Center; U.S. Department of Homeland Security (DHS), U.S. Coast Guard]

O:
Observing the Living Oceans from Space. Webcast - A Webcast of a presentation by Gene Feldman, NASA Goddard Space Flight Center. [U.S. Library of Congress (LOC)]

U:
United States Global Change Research Program - Coordinates and integrates federal research on changes in the global environment and their implications for society. [Multiple agencies involved]