The National Environmental Data Index (NEDI) provides direct access to environmental data and information* descriptions, and thereby, improves awareness of and facilitates access to data and information holdings. The overall goal of the NEDI is to facilitate the use of the widest possible range of environmental data and information to support our ability to protect human health, safety, and welfare; to maintain and restore ecological integrity; and to sustain economic stability and growth. The NEDI will be a focus for identifying environmental data and information holdings within the United States and ultimately, internationally.