other unanswered questions, three years down the road, maybe we are knew it all along or if they were in the dark until now d st like we were. remarkable new reporting on the question that i frankly was asked the most when i was down at the gulf covering this story. the worry that was expressed to me the most by people who live on the gulf coast and make their living on the water there, three years ago in the middle of the spill, this is what folks worry about more than anything. we are getting answered about it now three years later. for now crews are lying on the tried and true method of kpem cal dispushants. these are chemicals you have seen dusted offer the oil slick. bp dispursed thousands of gallons on the oil slick, not to mention that pumped to the leak. that is more used on any oil spell ever. the chemicals are toxic.