New York Times columnist and Princeton University professor Paul Krugman has won the Nobel Prize for economics.

The award committee said that Krugman won the prize for his work on international trade patterns. Since becoming a Times columnist in 1999, he has also become known for his persistent criticism of the Bush administration.

"For economists, this is a validation but not news," Krugman told his newspaper after learning of his award on Monday. "We know what each other have been up to. For readers of the column, maybe they will read a little more carefully when I