Ice Odyssey by M Gamache, S Gibbens and T Sickley

For three years the iceberg known as A-68A—one of Earth’s largest ever—floated toward South Georgia island, a pristine sanctuary for penguins and seals. Scientists warned of great damage and obstructed access to feeding grounds should the iceberg run aground off the island’s coastal shelf. But the currents in Iceberg Alley contributed to a happier outcome.