actually keeps the oil from raising, coming up to the surface. and what they're worried about is essentially it breaks down the oil. and they're worried that that will all remain in the sediment at the floor of the gulf of mexico, and that the long-term ill effects of that will be felt over the coming years. that that will get into the water column, eventually make its way up through the shrimp and the fish we eat. so there is great concern about that at this point. >> ed, thanks for the update. is there any way to accurately know how much oil is spewing into the gulf? we will find out from somebody who thinks he can tell. that's right after the break. be right back. i'm taking 8 pills a day, and if i take it for 10 days, that's 80 pills. just two aleve can last all day. perfect. [ male announcer ] choose aleve and you could be taking 4 times fewer pills than extra strength tylenol. just two aleve have the strength to last all day. get the all day pain relief of aleve. also in liquid-gels.