The iceberg looks like a "towering wall emerging from the ocean ... While Meijers noted icebergs like A23a are normal parts ...

When Warren and his colleagues analyzed that iceberg and other green icebergs sampled by Australian expeditions in the 1980s, they found the green parts were made of marine ice and not glacier ice.

A23a, the world's largest iceberg, poses a major threat as it approaches ... Ice giants are the most important parts of the Earth's climate system that influence ocean currents and ecosystems.