Reviews changes in United States nutrition since the 1969 White House Conference on Food, Nutrition, and Health and identifies necessary components of public, private and expert contributions towards a policy for ensuring adequate nutrition for all Americans. (AL)

References to standard theater journals are not included. (RD)

Instructions for observing the Solar Eclipse on Saturday, March 7, 1970, which will be total along a strip about 85 miles wide along the Atlantic Seaboard. Safety precautions and how to construct a pinhole camera to observe eclipse. (BR)

Discusses characteristics of sand, its derivation, various colors, shape, grain size, how it is transported, how sand dunes are formed, and economic uses. (BR)

Amplifies and clarifies a previous paper on pyramidal d orbitals. Discusses two sets of pyramid d orbitals with respect to their maximum bond strength and their symmetry. Authors described the oblate and prolate pentagonal antiprisms arising from the two sets of five equivalent d orbitals. (RR)

An interview with a scientist associated with the lunar rock analysis program in which discoveries concerning the moon and their contribution to the understanding of the origins of the earth-moon system are discussed. (Author/AL)

Nixon administration and chemical industry won some concessions on legislation being proposed to regulate new and existing toxic chemicals. (Author/RH)

Announces the recently established information service, the Environment Reporter," published by The Bureau of National Affairs, Washington, D.C. Elaborates use of the weekly periodical in a high school or university classroom and outlines some of the magazine's segments dealing with current environmental developments, state and federal laws,…