An on-stack transmissometer system, that is designed to provide a precision measurement of the opacity of visible emissions, is described. The sources of error in opacity measurements with regard to recent Environmental Protection Agency emission monitoring requirements and planned specifications are discussed. (Author/BT)

Theatrical revolution symbolized by the open stage is discussed. The mere absence of the proscenium arch can insure no more than an architectural modification. Any genuine and lasting artistic liberation must come with the attitudes guiding the use of the stage. The only valid principles are those which can point gently toward contemporary…

The author considers the search for a better, pollution-free environment and the political processes by which various groups attempt to influence or control the actions of others in the context. He defines the goal of conservation as a recognition of the interdependence of man and his environment and lists 13 propositions which indicate the urgent…

The current president of the National Academy of Science (NAS) is interviewed in this article. He discusses the reorganization of NAS and the National Research Council during his term of office. Concerns over environmental science, biochemistry research, and the decreasing role of science advisors to the Pentagon are presented. (MA)

Examines management implications of a previously developed model of environmental control, reviewing the model and discussing its role in an integrated environmental strategy. Implications of the model for education and training (with special reference to technologists and professionals) and appropriate types of environmental education for such…

A student center-dining hall building, scheduled for completion in June 1970, will house nine uniquely designed dining rooms in which Oriental, Italian, French, German, Mexican and American cuisine will be served on a rotating basis. (WM)

Discusses nine forms of conservation practices: sustained yield, repair, careful use, greater efficiency, lower consumption, doing without, substitution, new resources, and recycling. Suggests recirculation (saving goods from discard and from being broken down in a new manufacturing stage) as a 10th form of conservation practice. (Author/JN)

Describes the play environment and the play behavior of children in Venice, Italy. (Author/RH)

Describes the incorporation of nature into Asia's urban areas and discusses the philosophy of Jens Jensen, a landscape architect who advocated use of native plants and small, scattered parks. Explores implications for campus facilities managers. (EV)