Describes gene infusion, the continual replacement of genes for insecticide susceptibility into insect populations, to control the level of resistant genes in pest populations. (AL)

Summarizes the theory that as human cultures evolve, they will, unless destroyed by some prior event, ultimately destroy themselves by exhausting their essential resources, by damaging their ecology until it will not sustain them, or both." (Author/AL)

The meaning and history of the term symbiosis is discussed. The role of symbiosis in evolution is suggested. Research in the field of endocytobiology on symbiotic relationships is proposed. (CW)

A level of organization schema is presented which uses the concept of the organism as the pivotal unit and emphasizes biological relationships. (BB)

Cites the public image problem of field biologists and systematists. Discusses systematics and natural history including species variation, ecology, management of organisms and appreciation of nature. Describes widespread fallacies which downplay the importance of field biology and suggests ways to improve its image. (CW)