A critique suggesting that Commoner (see SE 506 053) has denigrated the role of population growth in producing the present environmental dilemma, and has instead incorrectly implicated technology as the sole source of the environmental problems faced by the United States. (AL)

Lists sources of business education equipment such as office appliances, furniture, and audiovisual aids. (MU)

Heat engines operating in the tropical oceans could provide a source of economical pollution-free electricity. A discussion of solar sea plants and how they could operate is presented. (DF)

Reviews reasons for the trend from wet chemical'' analytic techniques for measuring air pollutants toward physical methods based upon chemiluminescence, electrochemical transduction, flame ionization coupled with gas chromotography, and spectroscopy. (AL)

Annotated list of films, filmstrips, recordings and other materials for a unit on the 1968 and 1972 elections. (SP)

Provides a photograph of a football crowd and poses several questions that could be used in instruction in mathematics and science. (AL)

Recently a great number of books have been printed that are written and illustrated nicely and deal with sophisticated science content. Provides a list of such books in different science areas. Books are categorized as easy to read, medium difficulty, and challenging. (PS)