Diver seen through hole in slick of oil
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Where has all the oil gone?

There is now optimism about the speed and scale of the remaining clean-up operation after the worst environmental disaster in US history.

But while US officials say around a quarter of the spill is unaccounted for, scientists are concerned about what impact the dilute, dispersed, oil could do to marine life.

David Shukman reports.

  • 04 Aug 2010
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