This booklet identifies careers in nuclear energy and suggests preparation for such careers. Suggested are the types of courses in high school and college necessary for work in physical, biological, and veterinary sciences, engineering, medicine, scientific writing, and supporting fields such as nursing and laboratory technology. Brief descriptions of the work of nuclear physicists, nuclear chemists, biologists, geologists, engineers, mathematicians, medical scientists, and doctors, and others in related fields are given. The job opportunities in the United States Government Laboratories, private industry, educational organizations, hospitals, state and local government establishments, and other organizations are listed. Reading lists dealing with sources of financial aid for study and with descriptions of scientific careers are appended. (AL)