The report discusses contamination of the hydrogeological system (a primer), technologies to improve nutrient and pest management, farmer decision-making and technical assistance to reduce agrichemical contamination of groundwater, and public influences on agrichemical contamination of groundwater.

This paper presents the status of national efforts to cleanup dioxin-contaminated sites and the technologies that have been used, proposed, and researched. It covers thermal and nonthermal treatment techniques as well as approaches such as stabilization and storage. It discusses the development of these technologies as well as advantages and disadvantages of their use.

This background paper examines evidence of the risk of HIV transmission in the health care workplace and discusses the policy implications of CDC guidelines and congressional actions in response to this risk.

This report focuses on key assumptions that will affect the sizing and procurement of the new FBI system, and on other related steps that appear necessary to ensure complete and up-to-date record systems. These include full implementation of a Federal/State/local partnership for maintaining and exchanging fingerprint and criminal history records; enactment of an interstate compact or Federal legislation setting out uniform rules for the exchange of such records; standards and funding for improving criminal history record completeness and disposition reporting; and privacy and security protections for electronic fingerprint and record information.

This report analyzes various technologies that may be important for future advances in miniaturization. Current research in the United States and other nations is pushing the limits of miniaturization to the point that structures only hundreds of atoms thick will be commonly manufactured. Researchers studying atomic and molecular interactions are continuing to push the frontiers, creating knowledge needed to continue progress in miniaturization. Scientists and engineers are creating microscopic mechanical structures and biological sensors that will have novel and diverse applications.

This report examines the U.S. preparations process for WARC-92, highlighting efforts to integrate the needs and concerns of various interest groups. It also reviews the forces and trends affecting the United States as it approaches WARC-92, and is intended to inform future congressional oversight of the domestic and international radio communication policy process.

This paper describes a number of suggestions to improve the value of the USGCRP to both scientists and policymakers. The report observes that the USGCRP is focused narrowly on climate change. As a result, USGCRP may not be able to provide decision makers and natural resource managers with the information they will need to respond to other aspects of global change, The background paper also explicates the continuing debate over whether the sensors and satellites planned by USGCRP: 1) will be able to acquire data in sufficient detail to elucidate the mechanisms responsible for global change; 2) are appropriate for long-term monitoring of key indices of global change.