Amazing Environment Science Top Stories World315 billion-tonne iceberg breaks off AntarcticaTNT DeskOctober 1, 2019October 1, 2019 by TNT DeskOctober 1, 2019October 1, 2019 AMERY, Antarctica: An iceberg, the size of urban Sydney, has broken off an ice shelf in Antarctica. The Amery Ice Shelf, the third largest ice...