A portion of the 2,000 plus photographs taken on Skylab IV to document various features of interest are catalogued according to certain geologic, geographic, and atmospheric condition categories. Information concerning procedures for purchase are included. (CP)

Provides a list of sources for weather information. (CP)

Describes a computer-generated natural selection game which deals with various factors influencing survival and speciation processes. Variation of population size, growth rate, brood size, and selection pressure are permitted by the program, which is written in ASA Basic FORTRAN IV. (PR)

Briefly describes films about the following topics: water cycles, the energy crisis, the eruption of Mt. Aetna, the hot springs of Yellowstone National Park, and methods of using pine cones to determine the ages of ancient civilizations. (MLH)

Discusses ways in which a taffy candy bar can be used to illustrate, by analogy, deformations of the earth's crust under compressive stress. (MLH)

Discusses ways in which student exercises with disposable beverage containers can illustrate, by analogy, such things as rock surveys, animal territoriality, energy conservation, and mechanical weathering. (MLH)

Describes relief model construction and compass exercises appropriate for the secondary school. (CP)