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What is climate? Climate is commonly thought of as the expected weather conditions at a given location over time. People know when they go to New York City in winter, they should take a heavy coat. When they visit the Pacific Northwest, they should take an umbrella. Climate can be measured as man... More

Overall Air Force weapon system sustainment (WSS) costs are growing at more than 4 percent per year, while budgets have remained essentially flat. The cost growth is due partly to aging of the aircraft fleet, and partly to the cost of supporting higher-performance aircraft and new capabilities prov... More

Practitioners in informal science settings--museums, after-school programs, science and technology centers, media enterprises, libraries, aquariums, zoos, and botanical gardens--are interested in finding out what learning looks like, how to measure it, and what they can do to ensure that people of a... More

In recent years, planetary science has seen a tremendous growth in new knowledge. Deposits of water ice exist at the Moon's poles. Discoveries on the surface of Mars point to an early warm wet climate, and perhaps conditions under which life could have emerged. Liquid methane rain falls on Saturn's ... More

The successor states of the former Soviet Union have enormous stocks of weapons-usable nuclear material and other militarily significant commodities and technologies. Preventing the flow of such items to countries of proliferation concern and to terrorist groups is a major objective of U.S. national... More

An NRC committee was established to work with a Russian counterpart group in conducting a workshop in Moscow on the effectiveness of Russian environmental NGOs in environmental decision-making and prepared proceedings of this workshop, highlighting the successes and difficulties faced by NGOs in Rus... More

Autism is a word most of us are familiar with. But do we really know what it means? Children with autism are challenged by the most essential human behaviors. They have difficulty interacting with other people-often failing to see people as people rather than simply objects in their environment. The... More

Scenes of starvation have drawn the world's attention to Africa's agricultural and environmental crisis. Some observers question whether this continent can ever hope to feed its growing population. Yet there is an overlooked food resource in sub-Saharan Africa that has vast potential: native food pl... More

The nation's physical infrastructure facilitates movement of people and goods; provides safe water; provides energy when and where needed; removes wastes; enables rapid communications; and generally supports our economy and quality of life. Developing a framework for guiding attempts at measuring th... More

Despite widespread interest in virtual reality, research and development efforts in synthetic environments (SE)--the field encompassing virtual environments, teleoperation, and hybrids--have remained fragmented.Virtual Reality is the first integrated treatment of the topic, presenting current knowle... More

Those who make and implement policies for children and families are seriously hampered by several features of the federal statistical system: categorical fragmentation, sampling strategies that follow adults and families rather than children, and lack of longitudinal data on children. This volume ex... More

Americans agree that our students urgently need better science education. But what should they be expected to know and be able to do? Can the same expectations be applied across our diverse society? These and other fundamental issues are addressed in National Science Education Standards--a landmark ... More

People are demanding more of the goods, services, and amenities provided by the forests of the Pacific Northwest, but the finiteness of the supply has become clear. This issue involves complex questions of biology, economics, social values, community life, and federal intervention.Forests of the Pac... More

Over the past several decades, public concern over exposure to ionizing radiation has increased. This concern has manifested itself in different ways depending on the perception of risk to different individuals and different groups and the circumstances of their exposure. One such group are those U.... More

This book provides a brief overview of worldwide terrorist activity and reviews technologies and methods for designing blast resistant buildings. These techniques, primarily developed by the military, have applicability and relevance to the design of civilian structures. The volume recommends that a... More

Petroleum-based industrial products have gradually replaced products derived from biological materials. However, biologically based products are making a comeback--because of a threefold increase in farm productivity and new technologies.Biobased Industrial Products envisions a biobased industrial f... More

This book recommends the initiation of an "integrated" research program to study the role of aerosols in the predicted global climate change. Current understanding suggest that, even now, aerosols, primarily from anthropogenic sources, may be reducing the rate of warming caused by greenhouse gas emi... More

The use of drugs in food animal production has resulted in benefits throughout the food industry; however, their use has also raised public health safety concerns.The Use of Drugs in Food Animals provides an overview of why and how drugs are used in the major food-producing animal industries--poultr... More

There is a growing concern among educators and policymakers about the level of attrition from Ph.D. programs in the sciences and humanities at some U.S. universities. Reliable estimates of graduate student attrition are difficult to obtain, however, because most information comes from the administra... More

Fluctuations and declines in marine fish populations have caused growing concern among marine scientists, fisheries managers, commercial and recreational fishers, and the public.Sustaining Marine Fisheries explores the nature of marine ecosystems and the complex interacting factors that shape their ... More

This unique volume contains a powerful set of recommendations on issues at the center of international discussions on investment, trade, and technology policy. They take into account the globalization of industrial activity and the special characteristics of high-technology industries while recogniz... More

This book reviews a draft report from the federal government that assesses the effects of oxygenated gasoline on public health, air quality, fuel economy, engine performance, and water quality. In addition to evaluating the scientific basis of the report, the book identifies research needed to bette... More

Health promotion and disease prevention are central priorities in the Centers for Disease Control and Prevention (CDC) vision. To advance research in these areas, Congress authorized and CDC established a program of university-based Centers for Research and Demonstration of Health Promotion and Dise... More

The granting of offsets to promote exports of major aircraft systems has been a source of significant controversy. Critics believe that offsets undermine the U.S. manufacturing base; lead to the transfer of commercial technology, possibly affecting national security; and result in the loss of high-w... More

The U.S. Army Corps of Engineers has long been one of the federal government's key agencies in planning the uses of the nation's waterways and water resources. Though responsible for a range of water-related programs, the Corps's two traditional programs have been flood damage reduction and navigati... More