Argues that an understanding of professional and popular science writers' goals provides a basis for both explaining and evaluating their language use. Suggests that charges normally made against both types of writing deflect attention from the obstacles writers face and the ways in which they use language to overcome these obstacles. (KEH)

Investigates eighth-graders' summarizations of a scientific article used in their science class. Presents an analytic coding system developed to describe and detail structural and semantic strengths and weaknesses of students' expository summary essays. (SR)