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After Breaking Free, World's Largest Iceberg Is Stuck Spinning in Circles


For more than 30 years, the world's largest iceberg was stuck in the Antarctic. Five times the size of New York City's land area and more than 1,000 feet deep, the mammoth piece of ice finally became loose in 2020 and began a slow drift toward the Southern Ocean. Now, A23a, as it's known, is spinnin...

Five times the size of New York City's land area and more than 1,000 feet deep, the mammoth piece of ice finally became loose in 2020 and began a slow drift toward the Southern Ocean. Imagine a 1,400-square-mile piece of ice as deep as the Empire State Building spinning slowly but steadily enough to fully rotate it on its head over the course of about 24 days. "It's basically just sitting there, spinning around and it will very slowly melt as long as it stays there," said Alex Brearley, a physical oceanographer and head of the Open Oceans research group at the British Antarctic Survey.

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