BBC NewsUnion oil workers go on strikeCNNMoneyIt wasn't clear Sunday how long the strike would last or how deeply it would affect the U.S. energy industry, which has produced a glut of oil and is feeling the pressure of plunging prices that eat into pr …

Press TVOil jumps 8% Friday, trims January loss to 9%MarketWatchNEW YORK (MarketWatch) -- The U.S. oil benchmark settled sharply higher Friday, though it still finished the month with a big loss. WTI crude for March delivery CLH5, +7.46% settled up by $3.7 …