U.S. Environmental Protection Agency Administrator Lisa Jackson talks to Melissa Block about the oil spill in the Gulf of Mexico. She ordered BP to slash its use of a toxic dispersant called Corexit 9500. EPA originally ordered BP to halt using it all together, but backed off after BP said it was having trouble finding a substitute in large enough quantities. Jackson says the EPA is continuing to conduct toxicity tests on the dispersant.
EPA Chief Defends Use Of Oil Dispersant
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