Oil, out of sight?

The sudden "invisibility" of BP's oil spill in the Gulf of Mexico was widely reported in the media at the end of July, but the seeming absence of oil residues following the capping of the damaged oil well does not necessarily mean that chemistry, biology, and the weather have eradicated the problem. The National Oceanic and Atmospheric Administration stated that almost three fourths of the spilled oil has gone, either through capture, skimming, burning, evaporation, dissolution or dispersion, but that means that a fourth remains in the water and represents and ongoing threat to marine life and the coast.