Present knowledge about Mars is compared with past beliefs about the planet. Biological experiments that indicate life may exist on Mars are interpreted. Life patterns or biological features that might be postulated for extraterrestrial life are presented at the molecular, cellular, organism, and ecosystem levels. (DS)

Reviews evidence from molecular genetics and biochemistry, which supports the idea of some evolution, due to chance and selectively neutral mutations, occurring independently of natural selection. (AL)

A Discussion of attempts to understand the great inter-relationships among all areas of knowledge" by Neils Bohr, a physicist, and others. (SE)

The often observed and misunderstood phenomenon of movement of black and white vanes in toy radiometers under illumination is discussed in a generalized non-mathematical manner. Effects of light pressure, low gas density, friction, heat, and motion are illustrated. (JM)

Capillary and gravity water waves are related to the position, wavelength, and velocity of an object in flowing water. Water patterns are presented for ships and the whirling beetle with an explanation of how the design affects the objects velocity and the observed water wavelengths. (DS)

Describes general characteristics of enquiry - principle of enquiry, fact, problem, hypothesis, interpretation and outcome. These characteristics of enquiry give rise to five general characteristics of knowledge. (LS)

Describes a one semester introductory physics course for physical science students with PSSC and calculus as prerequisites. Course content concentrates on the properties of the electron, positron, andphoton. Summarizes the student evaluation of the course and the laboratory equipment used. (Author/DS)

Describes how the isometric projection with a transparent grid showing the x, y, and z axes drawn at 120 degrees each other is used. This method of presenting atomic orbitals was developed using the Cambridge University Titan computer and has the advantage over contour maps in that there is no distortion. (LS)

This article attempts to provide would-be solar system designers with a few of the reasons behind the devices found in liquid media solar collection systems. (Author)

Addresses Lawson's (2002) interpretations of Galileo's discovery of the moons of Jupiter and other cases that exhibit historical errors. Suggests that such cases can distort history and lessons about the nature of science. (SOE)

Examines how high school students think about science that is mediated by four different program genres on television: (1) documentary; (2) magazine-format programming; (3) network news; and (4) dramatic or fictional programming. Discusses findings regarding ethics and the validity of science, final form science, science as portrayed by its…

Investigates the role of the nature of science in decision making on science- and technology-based issues. Delineates factors and reasoning associated with types of decisions. Compares decision influence factors and decision-making strategies. Indicates that participants based their decisions primarily on personal values, morals/ethics, and social…