Whereas conventional analyses characterize environmental problems as examples of market failure, proponents of free-market environmentalism (FME) consider the problem to be a lack of markets and, in particular, a lack of enforceable and exchangeable property rights. Enforcing property rights alleviates disputes about, as well as the overuse of, most natural resources. FME diagnoses of pollution are much weaker, however. Most FME proponents suggest that common-law tort suits can adequately protect private property and ecological resources from pollution. Yet such claims have (...) not been substantiated. Further research is needed before the common law, or regulatory reforms grounded in common-law principles, can be seen as a viable alternative to traditional environmental regulation. (shrink)