In Gaia’s Revenge: Climate Change and Humanity’s Loss, Peter Liotta and Allan Shearer argue that scenario analysis can be a useful tool for policymakers searching for the proper response to the impending challenges presented by climate change. Over the course of seven chapters, the authors move from presenting the theoretical underpinnings of scenario development to discussing and critiquing an example of a climate change-focused scenario developed for the Department of Defense. Unfortunately, the discussion is, at times, disjointed and not fully developed. Despite these drawbacks, Gaia’s Revenge provides an interesting change of perspective for members of either the environmental or security communities.