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 named A23a could slam into South Georgia Island and get stuck or be guided around it by currents ...

The world's biggest iceberg -- more than twice the size of London -- could drift towards a remote island where a scientist ...

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

The world's biggest iceberg — a wall of ice the size of Rhode Island — is lumbering toward a remote island off Antarctica that's home to millions of penguins and seals. The trillion-ton slab ...

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