This paper presents an aggregate production function of the generalized Fechner-Thurstone (GFT) form to analyze the impact of an important component of intellectual industrial property, namely patent activity, on technical change in the USA for the period 1947-1981. We define a...

The presence of threshold effects or convex damage functions implies that the composition of pollutants may be as important in the determination of health outcomes as the level of pollution. As such, greater specialization in particular environmental hazards may suggest increasing costs from...

The concepts of an environmental Gini coefficient along with a measure of ''pollution elasticity'' are introduced and used to analyze the distribution of pollution across U.S. states from 1988 -- 1996. The special properties of the Gini coefficient allow one to decompose overall pollution...