Exclusive photos: A giant iceberg breaks off Antarctica

NASA scientists just got their first close look at a new iceberg three times the size of Manhattan. Our team was on the plane.

Curving ice canyons mark the edge of the new iceberg, dubbed B-46, as it breaks off the thick, floating ice shelf of the Pine Island Glacier in West Antarctica. In the foreground lies broken sea ice on the dark surface of the Amundsen Sea.
Photograph by Thomas Prior, National Geographic

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