Survey results indicate that, if effective sex control technologies were rapidly and widely adopted in the United States, the current sex preferences of married women would be for male children for the first couple of years of such control. Whatever characteristics associated with being firstborn would therefore be concentrated among males. (PEB)

Describes weaknesses of current incentives for lowering fertility and proposes a model with multiple incentives to individuals, groups, and entire communities. (AL)

An analysis of electricity demand projections suggests the long-run demand has been previously overestimated. Projections based upon alternate demographic and economic predictions are presented. (AL)

Reports a test of the stability of the model used in Jay Forrester's World Dynamics''. When Forrester's fundamentally Malthusian assumptions were replaced by technological-optimist views, computer simulations predicted a stable population with increasing quality of life, rather than a population crash and decreasing quality of life. (AL)

Discusses economic factors as the essential causes of world environment deterioration. Presents case for critical and prompt action in prevention of natural resource exhaustion and pollution, particularly by means of replacement level, population control, and consequent economic organization. (JM)

Considers that the supply of new scientists and engineers will eventually become limited by the availability of motivated and able young people. Population, enrollment, and employment projections to 1990 suggest that a shortage of graduates will occur in the 1980's. (AL)

Major consequences of present and additional environmental quantities of DDT pesticide are predictable by mathematical models of transport, accumulation and concentration mechanisms in the Wisconsin regional ecosystem. High solubility and stability produce increased DDT concentrations at high organism trophic levels within world biosphere…

Discusses some of the implications of the Plan of Action adopted by the United Nations Conference on World Population. Specific implications are especially apparent in three areas: the status of women, control of reproduction by individuals, and the use of environment. (Author/EB)

Describes a model for the future evolution of a stable ecosystem in a densely-populated society. Discusses designs for limiting population growth, resource-conserving settlements, and ways to feed growing cities. (MLH)

Discusses the impact of prevention of major causes of morbidity and mortality on life table assumptions and economic projections in the United States. Among changes to be expected is a major restructuring of the financing of old age pensions and social security. (Author/HM)

Topics covered in the upcoming AAAS Annual Meeting on "Science and the Quality of Life" are outlined and briefly discussed. (DT)

Discusses China's success in bringing population and food production into balance. (SL)