Discussed are beach replenishment, and hard structures in relation to the sand transportation system. Failures of current engineering practices and the resulting costs to the taxpayer are stressed. Equations and parameters used to make predictions of beach durability are criticized. (CW)

Investigates the nature of catastrophic volcanism and the rifting process. Describes two kinds of evidence: quantitative descriptions of rock melting and a wide range of observations. Discusses examples of continent growth in the North Atlantic, India and the Seychelles islands, and the South Atlantic. (YP)

Describes the change of earth's magnetic field at the boundary between the outer core and the mantle. Measurement techniques used during the last 300 years are considered. Discusses the theories and research for explaining the field change. (YP)

Asserts that how people respond to risk is determined by how they perceive risk. Four-hundred and seven secondary school students answered questions concerning different dimensions of natural hazards (most likely to occur, loss of life, and others). Although the students possessed a high level of awareness much of their information was inaccurate.…

Reviews a research project in which, using library and computer resources, students compiled a comparison profile of selected physical, social, and economic characteristics of Morocco and California. The students evaluated the relative role of environmental variables in influencing the human geography of the two regions. (MJP)

Reviews the tremendous transformation that human beings have wrought on the earth's surface from the Holocene to the present. Traces this transformation through various stages: the emergence and development of agriculture, agricultural impact and land degradation, ecological and political imperialism, industrialization, and environmental…

Details how to begin designing, implementing, and evaluating educational media in the geography classroom. Describes an approach to educational multimedia design focused on a coherent set of multimedia design standards informed by an understanding of evaluation functions. Includes illustrations from multimedia instructional screens. (MJP)