.Japan's Nikkei 225 index plunges 12.4% as world markets tremble over threats to the United States economic climate The Associated PressGlobal sell rout boosts with Japan's Nikkei experiencing worst 1 day loss and also other Asian markets dropping CNNStocks transmitted in Asia, tumble in Europe as markets fret over united state economic climate after weak than expected work disclose CBS NewsStocks Prepare for Losses as Economic Climate Fears Grow: Markets Cover Yahoo FinanceMarkets All Over The World Are Rattled by Fears of Slowing USA Growth The The Big Apple Times.