The September 11 attacks in New York and Washington have forced Americans to confront the fact that to live or work in a large city is to be at greater risk of large-scale terrorism. What do these risks, and the public perception of them, imply for cities in general and the future of New York...

Countries' military expenditures differ greatly across both space and time. This study examines the determinants of military spending, with particular reference to the importance of the external security environment. Using the liberal-realist model of international relations, we first estimate...

I show that military spending contributes to international arms proliferation through a push effect: large demand encourages production growth in the domestic market if transport costs are non-negligible. Under increasing returns to scale, the country can then supply weapons on the global market...

The U.S. population has been migrating to places with high perceived quality of life. A calibrated general-equilibrium model shows that such migration follows from broad-based technological progress. Rising national wages increase demand for consumption amenities. Under a baseline...

Since the early 1990s, there has been a renaissance in the study of regional growth, spurred by new models, methods, and data. We survey a range of modeling traditions, and some formal approaches to the hard problem of regional economics; namely, the joint consideration of agglomeration and...

The US population has been migrating to places with high perceived quality of life. Theoretically, such migration can follow from the increasing demand for amenities that accompanies increasing wealth. Under the baseline calibration of a general equilibrium model, a place with amenities for...

Technological innovation is a vital human activity that interacts with geographic factors and the natural environment. The purpose of the present study is to explain the relationship between climate zones and innovative outputs in order to detect factors that can spur technological change and,...

Technological change is a vital human activity that interacts with geographic factors and environment. The purpose of the study here is to analyse the relationship between geo-climate zones of the globe and technological outputs in order to detect favourable areas that spur higher technological...