This paper examines the causes of agricultural land expansion and deforestation in Tanzania. In the theoretical section, two different -and partly contradicting- sets of hypotheses are outlined.

Environmental problems are tied to the use of exhaustible resources. A resource tax extracts rents from the resource owning countries, whitout creating significant incentives for consumers to reduce their resource consumption. The placement of the tax burden on resource owners affects the...

We formulate a simple static equilibrium model for the electricity market taking account of both Green Certificates and CO2-emission permits. The objective is to investigate the relationship between these markets under the existence of upper and lower price-bounds on the Green certificates, both...

This paper examines how to harvest a biomass exposed to a potential collapse at an uncertain date. A specific recovery effect is identified which may be positive or negative. In general, the effect on the optimal biomass is indeterminate and depends upon the failure rate, the expected collapse,...