We use the Euler equation to put forward a back-on-the-envelope rule for the global carbon tax based on a two-box carbon cycle with temperature lag, and a constant elasticity of marginal damages with respect to GDP.  This tax falls with time impatience and intergenerational inequality aversion...

The global response to a catastrophic shock to productivity which becomes more imminent with global warming is to have carbon taxes to curb the risk of a calamity and to accumulate precautionary capital to facilitate smoothing of consumption.  Our multi-region model of growth and climate change...

A classroom model of global warming, fossil fuel depletion and the optimal carbon tax is formulated and calibrated. It features iso-elastic fossil fuel demand, stock-dependent fossil fuel extraction costs, an exogenous interest rate and no decay of the atmospheric stock of carbon. The optimal...

Optimal climate policy should act in a precautionary fashion to deal with tipping points that occur at some future random moment. The optimal carbon tax should include an additional component on top of the conventional present discounted value of marginal global warming damages. This component...

Climate change must deal with two market failures, global warming and learning by doing in renewable use. The social optimum requires an aggressive renewables subsidy in the near term and a gradually rising carbon tax which falls in long run. As a result, more renewables are used relative to...

Several of the authors question the efficacy of copyright, which is increasingly regarded as benefiting multinational organisations rather than individual authors and performers. Others are less critical of copyright per se, but question its ability to meet the new challenges of a digital era....

This paper addresses the efficient management of natural resource revenues in capital-scarce developing economies. It departs from usual prescriptions based on the permanent income hypothesis and argues that capital-scarce countries should prioritize domestic investment. Because revenue streams...