Science, Public Policy, And Global Warming: Rethinking the Market-Liberal Position (Viewpoint Essay‪)‬

A survey of market-liberal or libertarian publications and websites finds a large and growing literature on the issue of global warming. Almost without exception, this literature conveys a comforting message: Our planet is in good health. The markets that regulate resource use are working well. The only real dangers come from ill-considered policy initiatives that, if implemented, would do more harm than good. It would seem that the message is well received by its audience--it is repeated, embellished, and applauded with little variation. In this article, I take a contrarian position, not so much with respect to the science of climate change as with respect to the arguments used by market liberals in support of their message of comfort and complacency. One problem area concerns the proper use of scientific evidence in reaching conclusions regarding public policy. It seems to me that market liberals are often reckless in the degree of certainty they professes regarding climatological hypotheses that are, in fact, still controversial and in early stages of development. A second problem concerns the use of cost-benefit analysis. Market-liberal writers are prone to make cost-benefit arguments regarding climate policy that they would never accept in other contexts. Third, the literature on global warming is often weakly rooted, if rooted at all, in the core principles of classical liberalism from which modern market liberalism has evolved. Instead, it is, for the most part, indistinguishable from what is said by conservatives. It might even be said that there is no market-liberal position on this issue--only an echo of arguments made by Republican patriots and the carbon lobby.