- The world's biggest iceberg, A-68, just got a little smaller. At around 5,100 sq km, the behemoth has been the largest free-floating block of ice in Antarctica since it broke away from the continent in July 2017. But on Thursday, it dropped a sizeable chunk measuring about 175 sq km. https://www.bbc.com/news/science-environment-52395008 5 comments worldnews
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