Common topics are words or phrases used to develop argument, and commonplaces aid memory or catalyze frames of understanding. When used in argumentation, each may help interested parties more effectively communicate valuable scientific and environment-related information. This article describes 12 modern topics of environmental rhetoric, identified from 125 interviews, and discusses them in relation to their topical fluidity and managerial, generative, and encapsulated utility: "Al Gore," "balance," "common sense," "environment as setting," "experience," "extremism," "man's achievements," "pragmatism," "proof," "religion," "recycling," and "seeing is believing." Findings suggest that "environment" is a complex topic with many potential implications--using topics common to environmental rhetoric to shape argumentation may facilitate more productive environment-related communication. (Contains 8 figures and 25 notes.)