BBC: New details have emerged about "self-cleaning" effects in the Gulf of Mexico witnessed in the wake of the Deepwater Horizon oil spill.
Researchers reporting at the American Chemical Society conference revealed details of a cascade of micro-organisms that spring into action to degrade oil.
Research has also outlined how chemical "dispersants" used in clean-up efforts actually frustrate these processes.
However, the long-term effects of the weeks of oil exposure remain unknown.
And concern...