No one would deny the environment affects our health, but it's hard to estimate the consequences of exposure to various environmental factors, since the risks are not directly observable.
This work lays out methods for evaluating risks connected to the environment and ways for managing them given the uncertainty of our data. It shows how an approach to sound environmental policy based on the highly rational principle of precaution is not only possible but needed, and not only in media-sensationalized moments of crisis.