This paper deals with two different types of irreversibility: Pollution irreversibility occurs if the stock of pollution cannot be reduced (any more) by nature's assimilative capacity; characteristics irreversibility occurs when some characteristic of the environmental resource is irreversibly...

A small open economy produces a consumer good along with green and black energy and imports fossil fuel for black-energy production at an uncertain world market price. Efficient risk management requires curbing fuel consumption, and hence carbon emissions, when consumers are prudent. Moreover,...