Pricing the priceless -- Cost-benefit analysis of past decisions -- The unbearable lightness of regulatory costs -- Precaution, uncertainty, and dioxin -- The economics of atrazine -- Ignoring the benefits of pesticides regulation -- Modeling uncertainty: the US response to BSE -- Costs of preventable childhood illness -- Phasing out a problem plastic -- The costs of REACH -- Impacts of REACH on developing countries -- How should the US respond to REACH? -- Conclusion: economics and precautionary policies