Feature Humans The Wealth of Nations A country's competitive edge can spread industry to industry, like a disease Share this:FacebookTwitterPocketRedditPrintEmail By Davide Castelvecchi August 27, 2007 at 2:49 pm This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe