The response to the COVID-19 pandemic raises a question about the role of national curriculum frameworks in acquiring and applying knowledge about hygiene and prevention of disease. For curriculum designers, this means determining what children of different ages should learn about these topics and how they should develop and apply this knowledge.…

Modifying the environment is a characteristic of the human species. With deforestation and the expansion of urban centers, diseases known in animals have begun to be described in humans. Science textbooks constitute an instrument of great importance in understanding this issue. This study evaluated the main science textbooks, recommended by the…

Discusses the aging process related to physical changes of the human neural structure involved in learning, memory, and reasoning. Presents evidence that indicates such alterations do not necessarily signal the decline in cognitive function. Vignettes provide images of brain structures involved in learning, memory, and reasoning; hippocampal…

Discussed is a designer-drug technology called antisense which blocks messenger RNA's ability to carry information to protein producing sites in the cell. The applications of this drug to AIDS research, cancer therapy, and other diseases are discussed. (KR)