Proposes that students learn and do chemistry based on their own beliefs. Expresses concern that the educational system supports and rewards the learning of facts over the learning of concepts and general skills. Offers suggestions for instructional improvement. (TW)

Discusses the relation between amino acids and ribonucleic acid (RNA) in a copolymer. (HM)

Cites advances in x-ray diffraction, nuclear magnetic resonance, computer modeling, and display to guide the design and analysis of protein structures. Reviews recent advances in knowledge, synthesis techniques, and theory of proteins. (JM)

Supercomputing is described in terms of computing power and abilities. The increase in availability of supercomputers for use in chemical calculations and modeling are reported. Efforts of the National Science Foundation and Cray Research are highlighted. (CW)

Reviews the work, experiences, and views of Dennis L. and Donella Meadows, past-principal investigators of the "Limits to Growth" study. Focuses on current "Limits" work at Dartmouth's Resource Policy Center founded by D. L. Meadows with National Science Foundation support. Core activity at the Center is modeling for policy…

The application of nonequilibrium thermodynamics could lead to new ways of understanding social processes. (BB)

The escalation of commitment has been variously labeled the psychology of entrapment, the sunk cost effect, and the too-much-invested-to-quit syndrome. This article reviews the state of research and describes four major determinants: project; psychological; social; and organizational variables. A model is provided. (YP)