This newsletter presents a progress report for the 1973-74 year for the Biological Sciences Curriculum Study (BSCS). The program for the Educable Mentally Handicapped is reviewed and a new series of Animal Behavior films is described. Other articles in the newsletter include information on the Human Sciences Program with emphasis on the Seventh-Grade Writing Conference held in the summer of 1974, a discussion about the format of the new program entitled Biological Science: Invitations to Discovery, and a minicourse in Introductory College Biology. An environmental module for junior high, high school, and college students, and a description of the progress of the field-testing of fourth-, fifth-, and sixth-grade materials of the Elementary School Sciences Program (ESSP) are described. A program referred to as Biology in Three Dimensions is briefly described; it will be available in the fall of 1974. The BSCS International Program is summarized. Other items included in the newsletter are a BSCS Materials List, a list of area consultants, and an article listing and describing staff changes. (EB)