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 of ice — called a megaberg — could slam into South Georgia Island and get stuck or be guided around it by currents. If it gets stuck it could make it hard for penguin parents to feed their babies and some young could even starve. Overall, however, researchers aren't too worried about major harm from the iceberg, named A23a.
