Study: BP spill left 'bathtub ring' of oil across more than 1,200 square miles of Gulf seafloor
Scientists have found evidence of a "bathtub ring" of oil particles from the BP Deepwater Horizon spill covering more than 1,200 square miles of the Gulf of Mexico's seafloor, according to a study published online in the Proceedings of the National Academy of Sciences. A team of scientists with the University of California-Santa Barbara, University of California-Irvine, and the Woods Hole Oceanographic Institute tested more than 3,000 samples of sediment taken from 534 locations in the Gulf for the chemical hepane, a constituent of crude oil that was found in the oil released from BP's Macondo well.
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