Discusses the optimality of natural selection, ways of testing for optimum solutions to problems of time - or energy-allocation in nature, optimum patterns in spatial distribution and diet breadth, and how best to travel over a feeding area so that food intake is maximized. (JR)

Dirac's classical conclusions, that the values of e2, M and m are constants and the quantity of G decreases with time. Evoked considerable interest among researchers and traces historical development by which further experimental evidence points out that both e and G are constant values. (PS)

discusses the cosmology theory of a black hole, a region where an object loses its identity, but mass, charge, and momentum are conserved. Include are three possible formation processes, theorized properties, and three way they might eventually be detected. (DS)

Tested Richard Duschl's triadic model of the growth of scientific knowledge against research practices of 10 accomplished life scientists. Reports that the scientists were willing to change their aims, methods, or theories and were both realists and relativists depending on the scientific discourse about the phenomena in question. Discusses…

Gives an analogy useful for explaining the experimental teleportation of a quantum-mechanical state to beginning physics students. (WRM)

Describes current and cutting-edge research on proteins that may spark the interest of biology students. Contains 27 references. (WRM)

Physics teachers in secondary schools usually mention the world's largest particle physics laboratory--CERN (European Organization for Nuclear Research)--only because of the enormous size of the accelerators and detectors used there, the number of scientists involved in their activities and also the necessary international scientific…

A study involves multiple chemistry and physics concepts applied to a state of matter that has biological relevance. An experiment involving the synthesis and physical properties of liquid crystals illustrates the interdisciplinary nature of liquid crystal research and the practical devices derived from such research.

This document sets forth recommendations for the design of a new science assessment. The assessment resulting from this framework will start a new NAEP science trend (i.e., measure of student progress in science) beginning in 2009. This framework represents a unique opportunity to build on previous NAEP science work as well as key developments in…

Using cultured fibroblast cells, undergraduate students explore cell division and the responses of cultured cells to a variety of environmental changes. The students learn new research techniques and carry out a self-designed experiment. Through this project, students enhance their creative approach to scientific inquiry, learn time-management and…

It seems hard to believe that Dolly the cloned sheep was born 10 years ago, kindling furious arguments over the prospects and ethics of cloning a human. Today, the controversy over cloning is entwined, often confused, with concerns over the use of human embryonic stem cells. Most people are unclear what cloning is, and they know even less when it…

Examines a specific experiment in view of its ethical problems and possible scientific advances. (LS)

Some feminists have become discouraged because the theoretical and conceptual changes leading to a feminist science have not yet occurred. A scheme has been developed which charts the phases through which the disciplines in the social sciences and humanities progressed before reconceptualization from the new scholarship on women transformed those…

THE APPLICATION OF CYBERNETICS TO PEDAGOGY CAN CREATE A PRECISE SCIENCE OF INSTRUCTION AND EDUCATION THROUGH THE TIME-CONSUMING BUT INEVITABLE TRANSITION FROM IDENTIFICATION OF QUALITATIVE RELATIONSHIPS AMONG PEDAGOGICAL OBJECTS TO QUANTITATIVE ANALYSIS OF THESE OBJECTS. THE THEORETICAL UTILITY OF MATHEMATICAL MODELS AND FORMULAE FOR EXPLANATORY…

Discusses how the discovery of chaos has created a new paradigm in scientific modeling and how findings are contributing to changes in thought about many different branches of science. Includes explanations and examples of how chaotic behavior can be understood. (ML)