With oil from the big Gulf¹ of Mexico spill threatening fragile coastal² wetlands, clean-up crews are about to discover whether a combination of old and new clean-up methods will help limit the environmental damage. That's the topic of an article in Chemical & Engineering News (C&EN), ACS' weekly newsmagazine. C&EN Assistant Editor Michael Torrice notes that scientists and engineers are using three basic tools to try to clean up the spill, in which millions of gallons of oil escaped into the ocean from an oil rig（钻探设备） following a pipe rupture³（破裂） . Those tools include mopping-up the oil with absorbent（吸收剂） pads called "skimmers（撇油器） ," burning the oil in a controlled fashion, and breaking-up the oil into smaller particles using chemicals called dispersants（分散剂） . Despite these efforts, massive amounts of oil remain.

But scientists are also investigating new clean-up methods. One involves applying dispersants under water to prevent the oil from rising to the surface and forming emulsions（乳剂，乳胶） , reddish-brown clumps⁴ of an oil and water mixture that are extremely difficult to clean up. In recent tests of this approach, remotely operated underwater "robots" injected the dispersants directly into the leaking oil plume⁵. When oil hits the shore, scientists might rely on a more standard method and spray the wetlands with fertilizers that can boost the growth of naturally-occurring, oil-chomping bacteria that are found in the area. Whether or not this multipronged（多方面的） clean-up approach will save the wetlands remains⁶ to be seen.