We set up an endogenous growth model in which the efficiency of both capital and fossil energy can be improved, whereas the efficiency of one alternative energy source is limited. With capital and energy as complements, there exist two steady states: one stagnant where energy is fully derived...

Recent work has shown that microeconomic shocks at the firm and sector level account for a substantial share of output volatility. We examine whether this relationship holds for house price growth volatility, which also declined during the Great Moderation and increased after 2001. Using a novel...

To what extent is the international business cycle affected by the fact that an essential input (oil) is traded on the world market? We quantify the contribution of oil by setting up a model with separate shocks to efficiencies of capital/labor and oil, as well as global shocks to the oil...

International immigration ows are large, volatile and have recently increased. This paper is the first to study the dynamic effects of immigration shocks on the economy within a search and matching framework. Since the microdata indicates that some of the key macroeconomic effects of immigration...

Fulfilling the commitments embedded in the Paris Agreement requires a climate-technology revolution. Patented innovation of low-carbon technologies is lower in the EU than in selected peers, and very heterogeneous across member states. We motivate this fact with an endogenous model of directed...

How do markets economize on scarce natural resources? With an application to fossil energy, we emphasize technological change aimed at saving on the scarce resource. We develop quantitative macroeconomic theory as a tool for interpreting the past and thinking about the future. We argue, first,...