The number of undergraduate-level textbooks on environmental economics has increased in recent years, but the textbook treatment of optimal emissions (abatement) varies markedly from textbook to textbook. In particular, there is no consensus as to whether to model the economic “bad” (i.e....

This study examines the determinants of state labor productivity during the 1989 to 2000 period. Using the model developed by Carlino and Voith (1992), we estimate how state cha-racteristics such as population density, education, industrial structure, and business amenities (such as crime...