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

The biggest iceberg on Earth is heading toward a remote island, creating a potential threat to penguins and seals inhabiting ...

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

A colossal iceberg, twice the size of London, is slowly drifting towards a remote island in the South Atlantic. A23a, the ...

The trillion-ton slab of ice named A23a could slam into South Georgia Island and get stuck or be guided around it by currents ...

The world's largest iceberg, A23a, is on a crash course towards South Georgia, threatening millions of penguins and seals.

The world's iceberg is heading for South Georgia—a wildlife haven in the South Atlantic—and scientists are worried.

A photographer went to South Georgia hoping to find a yellow penguin he saw three years ago. Instead, he found an even rarer ...

A23a, a massive iceberg nearly the size of Rhode Island, towering at 40 meters, is on a collision course with South Georgia.

If it gets stuck near South Georgia Island, that could make it hard for penguin parents to feed their babies and some young ...

said that icebergs such as A23a "are so deep that before reaching an island or mainland they generally get stuck" on the ...