Oil Samples after Hurricane Isaac in Mississippi

Greenpeace researcher Jesse Coleman takes samples of oil washed up by Hurricane Isaac on West Ship Island, Mississippi, part of the Gulf Islands National Seashore, September 4, 2012. This area was heavily oiled during the British Petroleum Deepwater Horizon oil disaster, and officials are concerned that up to one million barrels of oil are estimated to remain in the Gulf of Mexico. Photo by Joe Smyth/Greenpeace
©Joe Smyth/Greenpeace