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 ...

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

The trillion-ton slab of ice — called a megaberg — could slam into South Georgia Island, making it hard for penguin parents ...

The trillion-ton slab of ice that scientists call a "megaburg" broke off from the Antarctic’s Filchner Ice Shelf in 1986.

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

The iceberg may drift past the continental shelf into open waters beyond South Georgia, a British overseas ... and breeding for seals and penguins on the island. "Icebergs have grounded there ...