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

A weekend satellite image with a zoom-in on the Polarstern The German Research Vessel Polarstern has made a remarkable circumnavigation of Antarctica's latest mega-iceberg. The ship sailed a ...

The Antarctic shore is a place of huge contrasts, as quiet, dark, and frozen winters give way to bright, clear waters, thick with algae and peppered with drifting icebergs in summer. But as the ...