When icebergs make news, it is generally due to something rare and dramatic: a chunk twice the size of New York City, another threatening the ecosystem of an entire island, or, of course, Titanic. But each day human eyes are watching bergs of many shapes and sizes, mapping their movements at both ends of the Earth and helping ships steer clear of these icy hazards. Call them iceberg trackers. Or iceberg-ologists. Or ice scientists, perhaps. They peer through clouds using radar and satellite technology, and descend through fog in specially…
