Biofuel production is being promoted through various policies such as mandates and tax credits. This paper uses a dynamic, spatial, multi-market equilibrium model, Biofuel and Environmental Policy Analysis Model (BEPAM), to estimate the effects of these policies on cropland allocation, food and...

The problem of the commons is more important to our lives and thus more central to economics than a century ago when Katharine Coman led off the first issue of the American Economic Review. As the U.S. and other economies have grown, the carrying-capacity of the planet -- in regard to natural...

Although international programs for carbon offsets play an important role in current and prospective climate-change policy, they continue to be very controversial. Asymmetric information creates several incentive problems, include adverse selection and moral hazard, in offset markets. The...

This paper analyzes a detailed plan to set quantitative national limits on emissions of greenhouse gases, following along the lines of the Kyoto Protocol. It is designed to fill in the most serious gaps: the absence of targets extending as far as 2100, the absence of participation by the United...

The model predicts a near doubling of the ratio of high- to low-skilled wages over the century. Increasing wage inequality arises from a traditional source -- a rising worldwide relative supply of unskilled labor, reflecting Chinese and Indian productivity improvements. But China's and India's...

This paper evaluates the degree to which current account patterns are explained by the variables suggested by the literature, and reflects on possible future patterns. We start with panel regressions explaining the current account of 69 countries during 1981-2006. We identify an asymmetric...