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The world' s largest iceberg is floating toward the island of South Georgia in the southern Atlantic Ocean. Scientists fear the iceberg could crash into the island and block major feeding areas for a large population of penguins and seals.The huge iceberg, named A68a, broke away from Antarctica's Larsen C ice shelf in 2017. It has since floated toward South Georgia, a British overseas territory. Satellite images show the iceberg has remained in one piece, about 150 kilometers long and 48 kilometers wide, which is traveling at one kilometer an hour and is on a path to hit South Georgia in aroun已知函数=