.Asia's Nikkei 225 index plunges 12.4% as world markets shiver over threats to the United States economy The Associated PressGlobal sell rout intensifies along with Asia's Nikkei suffering worst eventually loss and other Eastern markets plunging CNNStocks transmitted in Asia, roll in Europe as markets stress over U.S. economic condition after weak than anticipated tasks disclose CBS NewsStocks Prepare for Losses as Economy Worries Deepen: Markets Cover Yahoo FinanceMarkets Worldwide Are Actually Disturbed by Worries of Slowing U.S. Growth The New York Times.