STOCKHOLM, Sweden - Paul Krugman, the Princeton University scholar and New York Times columnist, won the Nobel economic prize Monday for his analysis of how economies of scale can affect trade patterns and the location of economic activity. Krugman has been a harsh critic of the Bush administration and the Republican Party in The New York Times, where he writes a regular column and has a blog called "Conscience of a Liberal." He has come out forcefully against John McCain during the economic meltdown, saying the Republican candidate is "more frightening now than he was a few weeks ago" and...