Investments in biofuels are booming globally in response to increasing costs of fuels and growing concern over climate change. The high and often fluctuating fuel prices have frustrated development efforts in Ethiopia. This has prompted policymakers to review energy development strategies and...

One important feature of tax reforms, in particular corporate tax reforms, is the uncertainty surrounding them. Are they going to be permanent or are they likely to be withdrawn by the subsequent government? The expected duration of the reform is important because it affects households' economic...

This paper analyses the determinants of growth of American cities, understood as growth of the population or of per capita income, from 1990 to 2000. This empirical analysis uses data from all cities with more than 25,000 inhabitants in the year 2000 (1154 cities). The results show that while a...