How humanity brought about the climate crisis by departing from its evolutionary trajectory 15,000 years ago—and how we can use evolutionary principles to save ourselves from the worst outcomes.Despite efforts to sustain civilization, humanity faces existential threats from overpopulation, globalized trade and travel, urbanization, and global climate change. In A Darwinian Survival Guide, Daniel Brooks and Salvatore Agosta draw on their expertise as field biologists to offer a novel—and hopeful—perspective on how to meet these tremendous challenges by changing the discourse from sustainability to survival. Darwinian evolution, the world's only theory of survival, is the means by which the biosphere has persisted and renewed itself following past environmental perturbations, and it has never failed, they explain. Even in the aftermath of mass extinctions, enough survivors remain with the potential to produce a new diversified biosphere.