This report the transplantation of adrenal medullary tissue to the nervous system.

This report estimates the impact on state and local governments of four possible changes in federal financing for public works.

This report has two primary goals. One objective is to provide provocative ideas on how emerging forces external to education may shape the future of distance learning. The second purpose is to depict a potential new field, technology-mediated interactive learning, that may result from synthesis of distance learning, cooperative learning, and computer-supported cooperative work.

This report on urban ozone was requested by the Senate Committee on Environment and Public Works, the House Committee on Energy and Commerce, and its Subcommittee on Health and the Environment in anticipation of the upcoming reauthorization of the Clean Air Act. Of the air pollutants that the Act covers, ozone has been the most difficult to bring under control; it may well be the most expensive.

This background paper reviews the status of the major sectors of the maritime industry engaged in EEZ activities and notes the significant trends. Basic data on the major sectors were first prepared for OTA by the Maritime Administration. OTA then conducted a survey of industry and other interested parties and prepared the analyses in the paper.

This paper examines dichotomous designations used to define rural and urban areas and discusses how they are applied in certain Federal programs. In addition, several topologies are described that are useful in showing the diversity that exists within rural areas.