The world’s largest iceberg—a behemoth more than twice the size of London—is drifting toward a remote island where scientists say it could run aground and threaten penguins and seals. The world’s largest iceberg—a behemoth more than twice the size of London—is drifting toward a remote island where scientists say it could run aground and threaten penguins and seals. Environment Phys.org – latest science and technology news stories