What should be the West's top priority for climate-change policy? This article is a revised and updated version of my talk to the Potsdam Global Sustainability Symposium (which drafted the Potsdam Declaration presented to the 2007 UN Climate Change Conference in Bali).

There is a large consensus among international institutions and national governments to favor urban-containment policies - the compact city - as a way to improve the ecological performance of the urban system. This approach overlooks a fundamental fact: what matters for the ecological outcome of...

This paper examines future energy and emissions scenarios in China generated by the Integrated Assessment Model WITCH. A Business-as-Usual scenario is compared with five scenarios in which Greenhouse Gases emissions are taxed, at different levels. The elasticity of China’s emissions is...

This paper systematically examines the role of fiscal policy, trade and energy taxes on environmental quality in Europe using disaggregated data for 12 European countries over the 1995-2008 period. It uses a methodology that obtains estimates mostly free of time-varying omitted variable biases....

This paper develops a model that integrates the climate and the global economy---an integrated assessment model---with which different policy scenarios can be analyzed and compared. The model is a dynamic stochastic general-equilibrium setup with a continuum of regions. Thus, it is a full...

This paper brings the aid effectiveness debate to the sub-national level. We hypothesize the non-robust results regarding the effects of aid on development in the previous literature to arise due to the effects of aid being insufficiently large to measurably affect aggregate outcomes. Using...

Two decades ago, 93% of the world’s poor lived in countries officially classified as Low Income (LICs). Now, 72% of the world’s poor live in Middle Income Countries (MICs). The dramatic shift has been brought about by fast growth in a number of countries with large populations. On present...

While environmental and labour issues are not new to the GATT, nor to other trade policy fora, they are likely to have a more prominent role in trade policy discussions in the years ahead for the newly formed World Trade Organization (WTO). Many developing countries perceive the entwining of...

Economic integration and free factor mobility may be expected to enhance the growth performance of a united Europe. Simple models of integration among independent, endogenously-growing economic entities suggest that factor mobility may deepen rather than reduce regional differences in economic...

Why do we observe some LDCs objecting to the prospect of a Multilateral Agreement on Investment (MAI), although they have been keen to liberalize investment in preferential agreements in recent years? In this Paper, we analyse the issue of MAI implementation and assess the welfare consequences...