This paper, by using conditional directional distance functions as introduced by Simar and Vanhems [J. Econometrics 166 (2012) 342-354] modifies the model by Färe and Grosskopf [Eur. J. Operat. Res. 157 (2004) 242-245], examines the link between regional environmental efficiency and economic...

This paper proposes a conditional directional distance function model in order to examine the link between regional environmental efficiency and GDP per capita levels. As an illustrative example we apply our model to USA regional data revealing an inverted ‘U’ shape relationship between...

Contrary to what is still often believed, the climate and trade communities have a lot in common: a common problem (a global “public good”) common foes (vested interests using protection for slowing down climate change policies) and common friends (firms delivering goods, services and...

Contrary to what is still often believed, the climate and trade communities have a lot in common: a common problem (a global “public good”) common foes (vested interests using protection for slowing down climate change policies) and common friends (firms delivering goods, services and...