We use a panel of historical patent data covering a large range of countries over the past century to study the evolution of innovation across time and space and its effect on productivity. We document a substantial rise of international knowledge spillovers as measured by patent citations since...

We use a panel of historical patent data covering a large range of countries over the past century to study the evolution of innovation across time and space and its effect on productivity. We document a substantial rise of international knowledge spillovers as measured by patent citations since...

The recent house price appreciation in the United States has renewed the interest in determining the existence of ”bubbles”. In this paper, we provide a model-free test of rational bubbles and we apply it to the U.S. housing market. Based on the current account identity, we argue that there...