When urban renewal requires land assembly, owners who hold out may delay or prevent efficient redevelopment. Governments that use eminent domain to take such properties might cause socially inefficient redevelopment if they underestimate the values of these properties. None of the recent...

The efficiency of mechanisms to control CO2 emissions is limited by disagreement about the harm from these emissions. Thus existing emission control mechanisms require negotiated compromise regarding either the efficient price or the level of emissions to be tolerated. As an alternative to...