At borders where rich and poor countries meet, services prices differ hugely. In principle, price differentials could be exploited to mutual benefit, offering improved job opportunities to the poor as well as better shopping opportunities to the rich. However, cross-border shopping is often...

One explanation of the recent real estate bubble might point to homeowners' artificially restricting housing supply. While empirical work has not found unequivocal evidence in support of this hypothesis, homeowners may well be restricting supply nonetheless, and without this restriction...