Icy Split-Up Could Destabilize Larsen C

An iceberg weighing 1 trillion tons calved from Antarctica’s Larsen C ice shelf around July 10, capturing global headlines. The iceberg, nearly the size of Delaware, is among the largest ever recorded. The calving is not directly linked to climate change, experts say; bergs break away naturally. And the ice was already floating, so it won’t raise sea levels. Of concern, though, is the fate of the remaining 88 percent of Larsen C, which still spans some 17,000 square miles.