Why the world’s largest iceberg has turned blue as scientists watch it fall apart

The world's largest iceberg, A-23A, is turning blue as it breaks apart. This massive ice formation, which broke from Antarctica in 1986, is now shrinking rapidly. Scientists expect A-23A to completely disintegrate within weeks. Its journey has been long, but its end is near. Another iceberg, D15a, has now claimed the title of the largest.