A new chemical analysis shows that virtually all the tar balls washing onto the Alabama coast are directly linked to the BP oil spill more than two years ago. The report by Auburn University says that tar balls caused by the spill are hundreds to thousands of times more common than another type of asphalt-like tar deposits I the Gulf.
Researchers tested tar found after Hurricane Isaac last month. They found the material is from the BP well, and that certain chemicals in the tar have barely broken down since June 2010.
BP says it hasn't seen the study, but the tar balls are scattered and BP is working to remove them.