We consider two models of economic growth with exhaustible natural resources, exogenous technical progress and agents heterogeneous in their time preferences. In the first model we assume private ownership of natural resources. We show that every competitive equilibrium in this model converges...

We assume a population of infinitely-lived households of the economy split into two groups: one with a high discount factor (the patient) and one with a low one (the impatient). The environmental quality is deteriorated by firm's polluting emissions. The governmental policy consists in proposing...