This article argues that evolution is of particular importance to those working on religious responses to the ecological crisis, despite public opposition to evolution in some quarters. To take evolution seriously, the article maintains, effects a fundamental revolution in reference points for those working in religion. The article presents the basic tenets of evolution, with a brief discussion of creationism and Intelligent Design theory. A second section discusses how attending to evolution changes the manner in which the ecological crisis is interpreted and understood. A final section explores hazards arising from, and contributions of religious responses to, the ecological crisis in the light of the revolution of evolution.