Mellinger, A.D.; Sachs, J.D.; Gallup, J.L. - Booth School of Business, University of Chicago - 2000
Geographic information systems (GIS) data was used on a global scale to examine the relationship between climate (ecozones), water navigability, and economic development in terms of GDP per capita. GDP per capita and the spatial density of economic activity measured as GDP per km2 are high in...