Ecological labels are a market-oriented environmental policy instrument which is applied in a rising number of countries. Products have to meet several criteria in order to qualify for a label. Criteria on production processes of goods can potentially conflict with international trade rules....

Using a gravity-type explanation of international trade flows at the industry level, it is shown that the pattern of comparative advantage in terms of sectoral export/import ratios in bilateral trade can be explained by relative income and relative per capita income. Total income of a country is...