One of the largest icebergs ever recorded just broke free of Antarctica

One of the largest icebergs ever recorded — measuring about the size of Delaware and containing a volume of ice twice the size of Lake Erie — has broken free from the Larsen C Ice Shelf in northwest Antarctica, according to scientists monitoring the region.  The iceberg weighs about a trillion tons, according to a team of researchers affiliated with a U.K.-based research project, known as Project MIDAS. While the iceberg calving event itself is likely mostly natural, it nevertheless...