Diffusion of Wal-Mart

An interesting paper on the spatial diffusion of Wal-Mart across the United States by Thomas Holmes: The Diffusion of Wal-Mart and Economies of Density
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Can better highways save Afghanistan?

From The Atlantic, an interesting article by Philip Smucker: Asphalt Dreams about the correlation between development highways and stability in Afghanistan. The article reminds that highways are not just for moving troops quickly to deploy elsewhere, but also to help settle the places they run through. While that may not have been foremost on the mind of proponents of The Dwight D. Eisenhower National System of Interstate and Defense Highways, (even though it has Defense in its name) it certainly has been important throughout history.