Photos | A look back at the BP oil spill
Gulf Oil Spill
Credit: AP
Greenpeace worker Lindsey Allen collects samples of oil that washed up along the mouth of the Mississippi River near Venice, La. Wednesday, May 19, 2010. Oil from last month's Deepwater Horizon oil rig explosion in the Gulf of Mexico has started drifting ashore along the Louisiana coast. (AP Photo/Charlie Riedel)
