Trade exerts important influences on the exploitation and protection of natural resources. Indeed, recognition of this influence is codified in the General Agreement on Tariffs and Trade, which allows exceptions to treaty obligations for measures "relating to the conservation of exhaustible...

This article discusses automobile fuel economy standards in the United States and other countries. We first describe how these programs affect the automobile market, including impacts on fuel consumption and other dimensions of the vehicle fleet. We then review two different methodologies for...