For 86 days, oil spewed into the Gulf of Mexico from BP's damaged well, dumping some 200 million gallons of crude into sensitive ecosystems. BP and the federal government have amassed an army to clean the oil up, but there's one problem -- they're having trouble finding it.
Watch 'World News' for the latest coverage on the Gulf oil spill.
At its peak last month, the oil slick was the size of Kansas, but it has been rapidly shrinking, now down to the size of New Hampshire.
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