Most research on point-nonpoint trading focuses on the choice of trading ratio (the rate point source controls trade for nonpoint controls), although the first-best ratio is jointly determined with the optimal number of permits. In practice, program managers often do not have control over the...

Textbook pollution permit trading markets are appealing due to simple market designs and their ability to solve allocation problems without firm-specific information. Neither of these features is true for water quality markets, which may explain why emerging programs in this area have with few...

For a number of animal species, speculators are betting on future price increases by holding large stockpiles of commodities from the animal. We develop a model to explain this behavior. We derive conditions where it can be optimal for a speculator to induce poachers to harvest so rapidly as to...