Students examine the bacterial expansion pattern and attempt to relate what they discover to expanding powers of two. They also relate what they see and discover to increasing living space requirements in a world of infinite space and finite space to discover that living space decreases as a function of one over expanding powers of two. The…

Most researchers and the Census Bureau expect the U.S. population to hit the 300 million mark sometime in October. This will make the United States the world's third most populous nation--behind China and India. In this article, the author found several websites dealing with the specific 300 million target, population growth in general, and…

In addition to its goal of limiting China's population growth, a key purpose of China's one-child policy is to improve children's well-being. The government has made a strenuous effort to limit parents' childbearing in exchange for the greater opportunities it provides for their only children, including educational opportunities. In this article,…

Described are experiments for demonstrating essential features of substrate-induced enzyme synthesis based on the Jacob-Monod model, and for showing that the activity of certain genes can be modified by environmental temperature. (RH)

Explores black attitudes toward population control. (SB)

This short report presents annual projections of first births for the United States from 1975 to 2000. Three projection series are included which reflect different assumptions about the proportion of women who will have at least one birth (the complement of the proportion remaining childless). The ultimate proportions are: Series I-90%; Series…

With the growth of population more horticultural goods and services are needed. The author notes a number of occupations that may provide careers for those trained in horticulture. (MF)

Reviews some research on, and provides a mathematical model for, the decline in bacterial populations in a closed system as a consequence of accumulating toxins and decreasing food. (AL)

Discusses the implications of Unesco's latest report on the status of literacy, the significance of the change of emphasis to functional literacy, and the effects of the population explosion on literacy statistics. (MF)

Roles for existing government agencies in achieving goal of zero population growth by research and planning to predict growth rates, provide incentives and means to limit family size, and inform and educate public are described. A tabulation of types of research, planning, operations, and options are given. (AL)

Discusses the benefits and dangers of technological developments. Emphasizes environmental problems, in particular pollution, pesticides and population problems. (EB)

Examines population growth during the 1990s for a variety of geographic levels including regions, divisions, states, metropolitan areas, counties, and large cities. Compares growth rates for the 1990s with earlier decades to provide an historical context for present-day trends in population growth and decline. Discusses how differential population…