Grade 3- Oil Spill in Pictures

In the three weeks since the April 20th explosion and sinking of the Deepwater Horizon oil rig in the Gulf of Mexico, and the start of the subsequent massive (and ongoing) oil leak, many attempts have been made to contain and control the scale of the environmental disaster. Oil dispersants are being sprayed, containment booms erected, protective barriers built, controlled burns undertaken, and devices are being lowered to the sea floor to try and cap the leaks, with little success to date.