Dollar tumbles against yen on oil drop, risk aversion

By Sam Forgione NEW YORK (Reuters) - The U.S. dollar was set to post its biggest one-day decline against the yen in over six weeks on Tuesday, while also edging lower against the euro, after a drop in oil prices added to concerns about global economic growth. Oil prices fell sharply for the second straight day. Analysts said the weakness intensified worries about slowing global growth since it could suggest falling global demand for the commodity as well as the potential for negatively impacted