Environmental issues imperil the libertarian utopia of a society in which the individual is completely sovereign over his or her private domain. Taken seriously, this aspiration would lead to an environmentalism so extreme that it would preclude human life, since most human activity entails incursions against the sovereign realms of other human beings. The fallback position many libertarians have adopted?free?market environmentalism?retreats from libertarian ideals by permitting some of the physical aggression of pollution to continue. Free?market environmentalism does embody the postlibertarian (...) insight that collective decisions in mass democracies tend to be inferior to individual decisions in market economies. But so far, free?market environmentalism has stopped short of carrying this insight to its logical conclusion by proposing the complete depoliticization of environmental decision making. A thought experiment in environmental depoliticization reveals the practical limits of free?market environmentalism. The upshot is that neither libertarianism nor free?market environmentalism can culminate in anything close to the abolition of the modern state; they can, however, by problematizing certain aspects of that state, allow us a clearer understanding of political and cultural life. (shrink)