This book approaches environmentalism via two academic disciplines, sociology and philosophy. Both have concerns about the environment's ability not only to sustain itself but to thrive. The authors argue that rather than simple sustainability, we must promote thrivability for the sake of protecting the environment and all living things. In this greatly expanded second edition, the authors have updated data and examples, introduced new topics and concepts, and emphasized the need to lessen our dependence on fossil fuels. Numerous topics are explored, from the differences between sustainability and thrivability, and the overuse of plastic, to mass extinction, the role of natural disasters and more. The COVID-19 pandemic offers an added perspective on the relationship between disease and the environment.