Speaking of polluting ships, U.S. officials have recently uncovered a rash of illegal sludge dumping at sea, and they say it may only be the tip of the iceberg. A number of ships have been caught releasing tons of oily, toxic sludge that's produced in their engine rooms, even as captains, crews, and corporate managers go to extremes to cover up their dirty deeds, doing everything from faking waste-disposal receipts to painting over brackets used to bypass pollution controls to lying to grand juries. Oftentimes the only way to catch a polluting ship is to get testimony from crew members, …
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