Oil & Gas
A crew works on a drilling rig at a well site for shale based natural gas on Monday, June 25, 2012 in Zelienople, Pa. Oil prices are expected to keep falling through 2013, trimming profits at some of the world's biggest petroleum companies and slowing a boom in North American production, analysts said Monday. Natural gas prices haven't fared much better: while higher since May, the price is still near 10-year lows. (AP Photo/Keith Srakocic)
