These Five Stories were written by Alan Edward Nourse, an American science fiction (SF) author and physician. He wrote both juvenile and adult science fiction, as well as nonfiction works about medicine and science. His SF works generally focused on medicine and/or psionics. Psionics refers to the practice, study, or psychic ability of using the mind to induce paranormal phenomena. Examples of this include telepathy, telekinesis, and other workings of the outside world through the psyche. (Summary compiled from Wikipedia.org)