Even if the materials, called dispersants, are effective, BP has already bought up more than a third of the world’s supply. If the leak from 5,000 feet beneath the surface continues for weeks, or months, that stockpile could run out.
Dispersing the oil is considered one of the best ways to protect birds and keep the slick from making landfall. But the dispersants contain harmful toxins of their own and can concentrate leftover oil toxins in the water, where they can kill fish and migrate great distances.
“Right now there is a headlong rush to get this oil out of sight out of mind,” Charter said. “You can throw every resource we have at this spill. You can call out the Marine Corps and the National Guard. This is so big that it is unlikely that any amount of response is going to make much of a dent in the impacts. It’s going to be mostly watching it happen.”