Do scale economies contribute to our understanding of international trade? Do international trade flows encode information about the extent of scale economies? To answer these questions we examine the large class of general equilibrium theories that imply Helpman-Krugman variants of the Vanek...

The most effective policy to address environmental externalities from vehicular fuel use is an appropriate fuel tax. Instead of raising fuel taxes, Canada's provincial and federal governments prefer to subsidize the purchase of fuel-efficient vehicles and the accelerated retirement of old...