Presents evidence suggesting that the longer-term biological effects resulting from climactic changes may be at least as serious as the immediate ones. Primarily considers results of a nuclear war in which sufficient dust/soot are injected into the atmosphere to attenuate most incident solar radiation. (JN)

Discusses the report of the National Academy of Science Committee on the Biological Effects of Ionizing Radiation, with particular reference to the possibilities for lowering maximum permissible standards for exposure to man-made radiation. The excessive use of diagnostic X-rays is considered. (AL)

Describes the origin, occurrence, and effects of radon gas. Cites studies which attribute 5,000 to 20,000 deaths per year to radon exposure and the synergistic effect between radon and smoking. Explains ways to reduce risks. (RT)

A news report on the possibility of a generic problem with fuel element design in scaled-up'' nuclear power plants. Some damage has been detected in new plants. (AL)

Describes new emphasis on research into solar and geothermal energy resources by governmental action and recent legislation and the decreased emphasis on atomic power in supplementing current energy shortages. (BR)

Describes the present state of solar technology, points out the need for research and development in this area, and indicates the important role solar technology could play in Third World development. (GS)

Nuclear technologists can offer an all but infinite source of relatively cheap and clean energy" but society must decide whether the price of eternal vigilance needed to ensure proper and safe operation of its nuclear energy system" is worth the benefits. (Author/AL)

Reviews the work of Weber and his colleagues in their attempts at detecting extraterrestial gravitational waves. Coincidence events recorded by special detectors provide the evidence for the existence of gravitational waves. Bibliography. (LC)