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

South Georgia is a resurrected wonderland of Southern Ocean fauna after the ravages of the sealing and whaling eras. Today it ...

These images from the Smithsonian Magazine Photo Contest show just why penguins have waddled into our hearts ...

A massive iceberg, known as A23a, is on an apparent collision course with South Georgia Island, a British territory in the South Atlantic Ocean. The giant sheet of ice, which originally broke off ...

The world's largest iceberg, A23a, is drifting toward South Georgia Island, a remote and ecologically vital wildlife haven. This massive block of ice, about the size of Rhode Island, poses a ...