"Trillion-tonne Iceberg A23a Breaks Free and Spins, Alarming Scientists"

The trillion-tonne iceberg A23a, the world's largest, has completed a spin near the Antarctic Peninsula and is expected to be swept away into the Southern Ocean soon. A23a, which broke off from the Antarctic coast in 1986, has been slowly drifting northward and is now poised to enter the powerful Antarctic Circumpolar Current. Recent images show the iceberg wasting at its edges, with waves cutting into its walls and forming smaller "bergy bits" and "growlers" as it journeys into rougher and warmer waters.