Suggests that at least 5,000,000 people are infected by the virus and that within the next five years 1,000,000 new cases will emerge. Describes three distinct infection patterns of the Acquired Immunodeficiency Syndrome that are apparent worldwide. (RT)

Discusses the biological and social effects of the disease on society. States that a crucial issue is protection from discrimination. Explains that infection can be stemmed by education and altered behavior patterns. (RT)

Described are some of the technical, military, and political considerations that bear most directly on the choices facing the United States and its NATO allies on modern lethal chemical weapons. (BT)

Discusses the management of the earth's water resources. Describes the global water cycle and the status of water pollution. Recommends that a water-management project should lean toward increasing the efficiency of water consumption rather than toward increasing the supply of water. (YP)

Discusses the issue of human population. Illustrates the projections of the growing human population in terms of developed and less developed countries. Describes the family planning programs in several countries. Lists three references for further reading. (YP)

Discusses air pollution occurring due to human activity. Describes which human activities generate which emissions, including acid rain, smog, ozone depletion, and change of trace gases. Suggests global effort to solve the earth's environmental problems. (YP)

Discusses how to shape the policies, launch the programs, and harness the resources for convincing ordinary people throughout the world to change in response to environmental crisis. Provides many political examples. Lists three references for further reading. (YP)

Discusses the human use of the planet earth. Describes the global patterns and the regional aspects of change. Four requirements for the cultivation of leadership and institutional competence are suggested. Lists five references for further reading. (YP)

Discusses whether the industrial way of life can be maintained without exhausting resources, generating unmanageable amounts of waste, and poisoning the environment. Provides three examples of self-sustaining industrial process systems using the industrial ecosystem approach. Lists five references for further reading. (YP)

Cites some of the evidence which suggests that the production of carbon dioxide and methane from human activities has begun to change the climate. Describes some measures which should be taken to stop or slow this progression. (RT)

Discusses the efficient use of energy. Compares reserves and pollutants generated by natural gas, oil, and coal. Points out some alternative energy sources and ways for improving energy efficiency in buildings, industrial processes, and transportation. Describes some problems in developing and developed countries. (YP)

Discusses the Airborne Antarctic Ozone Experiment (1987) and the findings of the British Antarctic Survey (1985). Proposes two theories for the appearance of the hole in the ozone layer over Antarctica which appears each spring; air pollution and natural atmospheric shifts. Illustrates the mechanics of both. Supports worldwide chlorofluorocarbon…