Wall Street set to open higher as oil prices rise

Wall Street was poised to open higher on Tuesday, tracking global equities, as investors' appetite for risk increased and as oil prices rose. World stock markets also rose, helped by solid corporate earnings in Europe, progress on Greek debt talks, and a new pledge by Japan that it was prepared to weaken its currency. U.S. stocks broke a three-day losing streak to close higher on Friday after a disappointing U.S. jobs report suggested the Federal Reserve would raise rates just once this year.