blue) and November 26 (red). Iceberg A23a is so big, the British Antarctic Survey calls it a “megaberg.” You could fit Greater London onto it two times over. A23a is the heavyweight iceberg ...

The world’s largest iceberg is on the move again, drifting through the Southern Ocean after months stuck spinning on the same spot, scientists from the British Antarctic Survey (BAS) have said.

November 26 (red). Iceberg A23a sounds like it should have a vintage horror movie catchphrase like “It came from West Antarctica!” or “Zombie iceberg on the loose!” The veteran iceberg had ...