A chunk of floating ice that weighs more than a trillion metric tons broke away from the Antarctic Peninsula, producing one of the largest icebergs ever recorded and providing a glimpse of how the Antarctic ice sheet might ultimately start to fall apart. A crack more than 120 miles long had developed over several years in a floating ice shelf called Larsen C, and scientists who have been monitoring it confirmed on Wednesday that the huge iceberg had finally broken free.An Iceberg the Size of Delaware Just Broke Off a Major Antarctic Ice Shelf (The New York Times, 12 July 2017, by JK Patel and J Gillis)
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