Part 1 Overview and conclusions: trade, the environment and public policy, Kym Anderson and Richard Blackhurst. Part 2 Economics of environmental policies in open economies: the standard welfare economics of policies affecting trade and the environment, Kym Anderson; the problem of optimal environmental policy choice, Peter J. Lloyd; the environment, international trade and competitiveness, Richard H. Snape. Part 3 Environment and trade - case studies: the trade and welfare effects of greenhouse gas abatement - a survey of empirical estimates, L.Alan Winters; international linkages and carbon reduction initiatives, John Pigott et al; successful conventions and conventional success - saving the ozone layer, Alice Enders and Amelia Porges; effects on the environment and welfare of liberalizing world trade - the cases of coal and food, Kym Anderson; international economic integration and the environment - the case of Europe, Michael Rauscher. Part 4 The political economy of interactions between environmental and trade policies: the influence of environmental concerns on the political determination of trade policy, Arye L. Hillman and Heinrich W. Ursprung; environmental policy formation in a trading economy - a public choice perspective, Bernard Hoekman and Michael Leidy.; promoting multilateral co-operation on the environment, Richard Blackhurst and Arvind Subramanian.