The 'world's biggest iceberg', "A23a iceberg", which is more than twice the size of London, is drifting toward South Georgia ...

"Icebergs have grounded there in the past and that has caused significant mortality to penguin chicks and seal pups," he said. Roughly 1,550 square miles across, the world's biggest and oldest ...

Frozen mass known as A23a threatens penguin and seal colonies on South Georgia and is expected to make contact in two to four weeks The world’s largest and oldest iceberg is on a collision ...

The world's biggest ... significant mortality to penguin chicks and seal pups," he said. Roughly 3,500 square kilometres (1,550 square miles) across, the world's biggest and oldest iceberg ...