The Danish “Klima 2020” plan sets an ambitious target for the complete phasing-out of fossil fuels by 2050. The Danish energy sector currently accounts for 40% of national CO2 emissions. Based on an extended Farrell input distance function that accounts for CO2 as an undesirable output, we...

This article examines how employee self-reported entrepreneurial contributions evolved in firms operating in Russia in 1995-2004 and whether changes can be explained by Akerlof's theory of implicit gift exchange in labour contracts. We find that these contributions were indeed influenced by wage...

We study the impact of social ties on the migration of inventors from East to West Germany, using the fall of the Iron Curtain and German reunification as a natural experiment. We identify East German inventors via their patenting track records prior to 1990 and their social security records in...