Over the course of the past century, there has been a sustained reflective engagement about environmental risks, disasters, and human vulnerability in our modern industrial world. This inquiry has raised a host of crucial questions. Just how safe is humanity in a world of toxic chemicals and industrial installations that have destructive potential? Is it feasible to prevent large—scale catastrophes like the ones in Bhopal, Chernobyl, and Fukushima and smaller—scale disasters such as oil spills and gas leaks? How do environmental hazards affect social and political orders? S. Ravi Rajan expertly synthesizes decades of public policy and academic discourse on how societies measure and ultimately come to terms with risk, danger, and vulnerability and offers a fresh, humanistic perspective for grappling with the new global scale and interconnectedness of these threats.