Natural soil fertility is now declining on an estimated one-fifth of the world's croplands. Direct evidence of the mounting pressures on the global cropland base is seen in accelerating soil erosion, the spread of deserts, and the loss of cropland to nonfarm uses. (Author/BB)

A discussion of a global timetable for conversion to solar energy uses which includes examinations of intermediate energy sources like ethanol, wind, and methane is given. (MDR)

The new presidential administration faces an array of urgent challenges. Complex public policy choices are necessary to address the near-term challenges of climate change and resource degradation which will help the United States deal with the chronic problems of global inequity and human deprivation. Outlines the environmental problems…

This article identifies the cumulative effects of some environmental problems facing mankind and presents possible alternative futures. The author discusses the pervasive infiltration and detrimental effects in the biosphere of polychlorinated biphenyls, the recent increase in acid rain, the loss of tropical rain forest lands, and future energy…

A review of the environmental problems identified on Earth Day 1970 is presented. Problems on conspicuous consumption, combustion of fossil fuels, and toxic substances are discussed. (SMB)

Summarized are some aspects of knowledge about the potential health consequences of a nuclear war. Discussed are fires, radioactive fallout, and synergistic effects. (CW)

Presents excerpts from the first chapter of a report presented to the General Assembly of the United Nations during the Special Session on Disarmament. Discussed are key scientific issues regarding the global effects of nuclear war, and the findings and conclusions presented in the report. (CW)

Describes the creation and activities of the Scientific Committee on Problems of the Environment (SCOPE) and its study on the environmental consequences of Nuclear War (ENUWAR). Reviews the major conclusions of the 1986 SCOPE ENUWAR report and highlights the workshop that occurred in Moscow, March 1988. (CW)

Provided is an update on nuclear winter research based on reports made at the Moscow meeting of the Scientific Committee on Problems of the Environment (SCOPE) including early results from a major field experimentation program. Describes the development and effects of smoke produced from nuclear detonations. (CW)

Describes the second volume of the environmental consequences of nuclear war (ENUWAR) study of the Scientific Committee on Problems of the Environment (SCOPE) which involves the potential consequences for the Earth's biological systems. Discusses case studies in areas where the indirect effects of nuclear war would be the greatest danger. (CW)

Described are the global effects of nuclear war. Discussed are radiation dosages, limited nuclear attacks, strategic arms reductions, and other results reported at the workshop on nuclear war issues in Moscow in March 1988. (CW)

Explores why some European countries are much more eager than the United States to endorse international environmental treaties and the roles history, culture, economics, and geography play. Influential policymakers throughout Austria, Germany, Sweden, and the United Kingdom are interviewed. (12 references) (Author/MCO)

Described are theoretical models that simulate the dispersion of radionuclides on local and global scales following the accident at the Chernobyl nuclear power plant. Discusses the application of these results to nuclear weapons fallout. (CW)