Discusses formation of chemical molecules via Mobius strip intermediates, and concludes that many special physics-chemical properties of the fully closed circular form (1) of polyoma DNA are explainable by this topological feature. (CC)

Describes an experiment which can be used to provide an introduction to study of reaction mechanisms and training in use of simple analytical and instrumental techniques. (PS)

A constitutional genetic neurochemical dysfunction is posited as the basis of a large number of learning disabilities. (Author/GW)

Experience gained for teaching elementary chemistry to adults led to the following working conclusions necessary if such courses are to succeed: a need for student self-admission of ignorance, diagnostic testing and frequent retesting, a willingness by student and instructor to compromise and to digress, the inclusion of ad hoc demonstrations and…

TCDC electrophysiologic recordings, histamine wheal tests, eosinophile counts, blood cortisol determinations, and behavioral observations were conducted on 15 autistic children and on controls to study several interrelationships, particularly malabsorption and cerebral dysfunction. (Author)

Reviews three years of research on the effects of marihuana in man. Previously known clinical mental and physical effects have been confirmed. Causes and mechanisms of these effects generally remain undetermined in man and animals. Social implications and long term effects require additional study, although usage appears detrimental. (JM)

Employing the device of a fantasy, a landscape architect demonstrates that the world is an interdependent, interacting biosphere. (Author)