ILULISSAT, GREENLAND - JULY 22: Seagulls sit on an iceberg on July 22, 2013 in Ilulissat, Greenland. As Greenlanders adapt to the changing climate and go on with their lives, researchers from the National Science Foundation and other organizations are studying the phenomena of the melting glaciers and its long-term ramifications for the rest of the world. In recent years, sea level rise in places such as Miami Beach has led to increased street flooding and prompted leaders such as New York City Mayor Michael Bloomberg to propose a $19.5 billion plan to boost the citys capacity to withstand future extreme weather events by, among other things, devising mechanisms to withstand flooding. (Photo by Joe Raedle/Getty Images)

An enormous iceberg, over 2,000 square miles in area – or nearly the size of Delaware – is poised to detach from one of the largest floating ice shelves in Antarctica, and float off in the Weddell Sea, south of the tip of South America.
Scientists have been expecting this break from the Larsen C ice shelf, monitoring the progress of a crack which extended to over 100 miles long in recent months. The latest update from scientists with NASA and the University of California found that only three remaining miles of ice continue to connect the impending iceberg to the larger shelf.
Those parts of the iceberg that have already detached have begun to move rapidly seaward, widening the rift in recent days and leaving the remaining ice “strained near to breaking point,” according to Adrian Luckman, a scientist monitoring Larsen C at Swansea University in Wales.
The expected event on its own will not affect global sea levels, …
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