This is the first of a new series of brief ancedotes about materials and phenomena which exemplify chemical principles. Examples include (1) the sea-lab experiment illustrating principles of the kinetic theory of gases, (2) snow-making machines illustrating principles of thermodynamics in gas expansions and phase changes, and (3) sunglasses that…

Presents basic physical theory for movement of electric charges in clouds, earth, and air during production of lightning and thunder. Amount of electrical energy produced and heating effects during typical thunderstorms is described. Generalized safety practices are given. (JM)

Focuses on the main naturally occurring ways in which compounds of carbon, nitrogen, and sulphur enter or leave the atmosphere. (Author/SA)

Tells how science books can provide children with a chance to learn the methods of science and how to use them. (HOD)

Describes the gravitational lens effect and the chance of observing it. The use of stars, galaxies, or quasars is recommended for alignment with an intervening lens mass. (Author/SA)

Discussed is the present concept of the ultimate nature of matter--the elementary particle. An explanation is given for why the lepton family of particles--the electron, muon, and tau--may be truly elementary. The tau lepton is described in more detail. (Author/DS)

Argument exists as to the degree that education fits the criteria of a science. The scientific method cannot be applied to education since it has not developed a consistent set of concepts and theories as demonstrated within the natural sciences. (JN)