The world's biggest iceberg is drifting toward a tiny south Atlantic island, potentially affecting the wildlife there, ...

Measuring roughly 1,350 square miles (3,500 square kilometers) across, A23a is the world's largest and oldest iceberg ...

Roughly 3,500 square kilometres (1,350 square miles) across, the world's biggest and oldest iceberg, known as A23a, calved from the Antarctic shelf in 1986. It remained stuck for over 30 years ...