This paper derives the conditions under which fitness-reducing alleles can survive in a long-run stationary equilibrium for a trading population, extending the results in Saint-Paul (2002) for arbitrary systems of sexual reproduction.

This paper explores the implications for trade relations of the greening of world politics. It modifies the standard theory of changing comparative advantages in a growing world economy to show the effects on trade of taking into account the fact that the demand for domestic environmental...

The paper analyzes the evolution of coalitions over the early 1980's between business interests, government authorities in the larger industrialized countries and European institutions, notably the Commission, to promote policies aimed at securing a European comparative advantage in...

The growth of the Italian economy over the past 150 years since unification was accompanied by a dramatic increase in the country’s integration with European and global commodity markets: foreign trade in the long run grew on average faster than the overall economy. Behind the dynamics of...

We study the determinants of comparative advantage in polluting industries. We combine data on environmental policy at the country level with data on pollution intensity at the industry level to show that countries with laxer environmental regulation have a comparative advantage in polluting...

When asked to name one proposition in the social sciences that is both true and non-trivial, Paul Samuelson famously replied: `Ricardo's theory of comparative advantage'. Truth, however, in Samuelson's reply refers to the fact that Ricardo's theory of comparative advantage is mathematically...

The theory of comparative advantage is at the core of neoclassical trade theory. Yet we know little about its implications for how nations should conduct their trade policy. For example, should import sectors with weaker comparative advantage be protected more? Conversely, should export sectors...

Freshwater scarcity is bound to be a major challenge of the 21st century. Drawing on newly available data, I investigate to what extent countries make efficient use of the very uneven water resources on a global scale. In particular, I find that countries that are relatively water abundant tend...

In this paper, we incorporate a positive theory of unemployment insurance into a dynamic overlapping generations model with search-matching frictions and on-the-job learning-by-doing. The model shows that societies populated by identical rational agents, but differing in the initial distribution...

This paper studies the link between volatility, labour market flexibility, and international trade. International differences in labour market regulations affect how firms can adjust to idiosyncratic shocks. These institutional differences interact with sector specific differences in volatility...