Lex mercatoria or Law Merchant (‘LM') is said to be the self-made law of international commerce. According to its proponents, LM is an autonomous legal order that not only supplements state commercial law, but works as a substitute for it. The ‘ancient' LM, which accompanied the commercial...

This study examines the effects of national culture and institutional characteristics on the rating migration dynamics of countries rated by Standard & Poor's (S&P) during the period January 1985-October 2011. The study finds that national culture and institutional characteristics have...

This technical report describes the mixed methods data collection of the first in-depth empirical study of intra-EU highly skilled migration in Germany. The target population of our study consists of EU immigrants in Germany who belong to the medical profession. The overall study design is based...

The coffee industry connects millions of smallholder farmers with global markets and has historically been a frontrunner in sustainability efforts. Yet, the governance of this value chain and its sustainability depends on the distribution of power between market actors. This paper applies a...

This paper provides a qualitative empirical analysis of the emergence of a new transnational municipal initiative, the Global Covenant of Mayors for Climate & Energy, launched on January 1st 2017. This new initiative is the result of a merger of two previously existing networks, the Compact of...

Intensity standards have gained substantial momentum as a regulatory instrument in US climate policy. Based on numerical simulations with a large-scale computable general equilibrium model we show that intensity standards may rather increase than decrease counterproductive carbon leakage....

This working paper presents the initial results of our representative survey of physicians working in Germany who are non-German EU citizens and who have recently immigrated to Germany (N: 1712). We address the education and training obtained by respondents by investigating the country in which...

In spite of scientific agreement on the negative effects of anthropogenic climate change, efforts to find cooperative solutions on the international level have been unsatisfactory so far. Trade sanctions in the form of import tariffs are one principal measure discussed as a means to foster...

With his announcement to pull the US out of the Paris Agreement US President Donald Trump has snubbed the international climate policy community. Key remaining parties to the Agreement such as Europe and China might call for carbon tariffs on US imports as sanctioning instrument to coerce US...

Carbon-based import tariffs are discussed as policy measures to reduce carbon leakage and increase the global cost-effectiveness of unilateral CO2 emission pricing. We assess how the potential of carbon tariffs to increase cost-effectiveness of unilateral climate policy depends on the magnitude...