The other factor that keeps getting worse, especially near the coast of Louisiana, is the smell. There is a smell from the oil and maybe from the dispersant that has caused a number of complaints as far away as New Orleans. You can't see it, and after a few days you might get used to it, but then you may notice a headache, burning eyes or a cough. My team there had all three after a week, and many locals we interviewed complained of feeling sick. With all the attention to the spill, there is not much attention to the fumes, but it should be a factor with anyone considering spending time in an oil-soaked area. There are a lot of unknowns.