A huge chunk of the Petersen Glacier has broken off in Greenland and is heading south, believed to be a victim of global warming.  This ice island, three times the size of Manhattan, may be heading for the Canadian shore of Newfoundland, where there are numerous oil rigs.  If such a massive piece of ice moves into that area, the danger of yet another massive oil spill is a possibility.  This is the same area where an iceberg sank the Titanic in 1912.  To further emphasize the size of this ice...
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