One of the more effective ways to convey the story of our origin and evolution is to present the entire chronicle in a multimedia format that allows today's tech-savvy students to browse at will, thereby extracting parts of the story at their own pace and comfort. This article describes an interactive CD-ROM (included in this issue of "The Science Teacher") that teaches students and teachers about integrated, interdisciplinary science. The opening screen of the CD shows the archetypal symbol of cosmic evolution--the "arrow of time." The arrow starts with the big bang at the left, moving across billions of years to the present at the right. The resulting scope and sequence flow across seven epochs in 14 billion years, and include physics, astronomy, geology, chemistry, and biology--conventionally taught as separate subjects but woven together here to give each subject greater context and relevance. This arrow of time enables teachers and students to browse their favorite topics and to probe how each science discipline overlaps and relates to others. The CD can be used alone or along with the Internet; the latter method allows users to connect to scores of additional websites that provide complementary material about different epochs along the arrow of time. (Contains 1 figure.)