Gulf oil spill's vastness confirmed: Largest marine oil accident ever

In the first independent paper on the volume of the Gulf oil spill, scientists have affirmed heightened estimates of what is now seen as the largest marine oil accident ever. Using a new technique to analyze underwater video of the well riser, they say it leaked 56,000-68,000 barrels daily -- maybe more -- until it was capped. Their estimate of total oil escaped into the ocean is 4.4 million barrels -- close to the most recent consensus of government advisers.

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