GLOBAL MARKETS-Stocks drop on Euro zone concern, euro falls

percent lower. The dollar index .DXY rose 1 percent, which dented commodity prices and shares of commodity-sensitive shares. Alcoa Inc (AA.N) lost 1.9 percent to $15.95 and Freeport-McMoRan Copper & Gold (FCX.N) fell 2.3 percent to $47.25. U.S. crude oil...