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Studies of the blubber on the two salmon-eating populations of resident killer whales - the endangered southern residents with 88 members and the threatened northern residents with 230 members - have found a significant amount of PCBs and the chemicals found in fire retardants PBDEs in their systems. |
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Hitler's lost U-boats found in the Black Sea For years, German submarines U-19, U-20, and U-23 preyed on British and Russian shipping, then, 60 years ago, they suddenly vanished to the bottom of the Black Sea. |
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