The key policy question in managing hazardous technologies is often some variant of: “How safe is safe enough?” A typical response of regulatory agencies has been to lay down minimum requirements for how hazardous facilities should be built and operated, without specifying the level of...

Precautionary principles have been proposed as a fundamental element of sound risk management. Their advocates see them as guiding action in the face of uncertainty, encouraging the adoption of measures that reduce serious risks to health, safety, and the environment. Their opponents may reject...