Describes the highly complex mixture of gaseous and particulate matter found in urban air. Explains progress made in the understanding of the physics and chemistry of air pollution, the effects of precursors on ozone, the role of biogenic hydrocarbons, and the principal benefit of methanol-fueled vehicles. (RT)

Discusses widespread concern for the economic, social, aesthetic, and ecological consequences of acid rain. Eastern North America is the geographical focus of the concern. (RT)

Discusses many of the scientific questions surrounding the greenhouse effect debate and the issue of plausible responses. Discussion includes topics concerning projecting emissions and greenhouse gas concentrations, estimating global climatic response, economic, social, and political impacts, and policy responses. (RT)

Discusses some of the similarities and differences between the attitudes of Japanese and American citizens toward science. Reports on major discrepancies between the two populations' views about such things as evolution, the development of new plants and animals, and the effect of rocket launchings on the weather. (TW)

Reports on efforts in France to reshape science education through a focus on primary and secondary education, higher education, and research and development. (DDR)