Although much has been written about monopoly extraction of natural resources, the case of a resource being sold in two separate markets has escaped notice. We find that a monopolist facing two different iso-elastic demand schedules extracts more rapidly than the social planner, whether or not...

It is common wisdom that open-access leads to the inefficient use of resources and private ownership of resources improves efficiency. However, the impact of enclosure and efficient management of some resource pools on other open-access resource pools is poorly recognized. The problem is common...

Tuberculosis is the most important infectious cause of adult deaths after HIV/AIDS in low- and middle-income countries. This paper evaluates the economic benefits of extending the World Health Organization's DOTS Strategy (a multi-component approach that includes directly observed treatment,...

"Artemisinin-based combination treatments (ACTs) are seen as an important tool in the global effort to roll back malaria. With rapidly increasing parasite resistance to chloroquine in many parts of the world, there is greater international recognition of the need for both a different...