From Homeland Security Affairs, Stephanie Blum (TSA): Preventive Detention in the War on Terror: A Comparison of How the United States, Britain, and Israel Detain and Incapacitate Terrorist Suspects. Avinash Dixit, president of the American Economic Association, on why Krugman got the Nobel Prize (and more from The Economist). David Warsh on the professor and the columnist. Edward Glaser honors Krugman; and here's Krugman on Krugman. The first chapter from Economic Geography: The Integration of Regions and Nations by Pierre-Philippe Combes, Thierry Mayer and Jacques-Francois Thisse. Our disappearing wealth: What the heck happened to all that money? This is what denial does: The economic crisis is petty by comparison to the nature crunch, but they have the same cause. From New Scientist, a look at how gay sex can produce offspring. From Technology Review, an article on Wikipedia and the meaning of truth: Why the online encyclopedia's epistemology should worry those who care about traditional notions of accuracy; and an article on the privilege of being wrong: Then and now, we face the problem of determining what is true. A review of The $12 Million Stuffed Shark: The Curious Economics of Contemporary Art by Don Thompson. Here's Radar's investment guide to cocaine, hookers, and other vices.