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(FILES) This file photo taken on November 11, 2016 shows an image obtained from NASA showing the Antarctic Peninsula's rift in the Larsen C ice shelf from NASA's IceBridge mission Digital Mapping System. 
A trillion-tonne iceberg, one of the biggest on record, has snapped off the West Antarctic ice shelf, said scientists on July 12, 2017, who have monitored the growing crack for months. "The calving occurred sometime between Monday, July 10 and Wednesday, July 12, when a 5,800-square kilometre (2,200-square mile) section of Larsen C (ice shelf) finally broke away," the Swansea University said in a statement.

 / AFP PHOTO / NASA's Goddard Space Flight Center / HO / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT AFP PHOTO /NASA's Goddard Space Flight Center  - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

HO/AFP/Getty Images
(FILES) This file photo taken on November 11, 2016 shows an image obtained from NASA showing the Antarctic Peninsula's rift in the Larsen C ice shelf from NASA's IceBridge mission Digital Mapping System. 
A trillion-tonne iceberg, one of the biggest on record, has snapped off the West Antarctic ice shelf, said scientists on July 12, 2017, who have monitored the growing crack for months. "The calving occurred sometime between Monday, July 10 and Wednesday, July 12, when a 5,800-square kilometre (2,200-square mile) section of Larsen C (ice shelf) finally broke away," the Swansea University said in a statement.

 / AFP PHOTO / NASA's Goddard Space Flight Center / HO / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT AFP PHOTO /NASA's Goddard Space Flight Center  - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

HO/AFP/Getty Images

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    Massive iceberg breaks away from Antarctica

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Massive iceberg breaks away from Antarctica

Eric Rignot, a senior research scientist with NASA's Jet Propulsion Laboratory, discusses the scientific significance and what conclusions can be drawn from the iceberg breaking away from the Antarctic Ice Shelf.

Massive iceberg breaks away from Antarctica

Eric Rignot, a senior research scientist with NASA's Jet Propulsion Laboratory, discusses the scientific significance and what conclusions can be drawn from the iceberg breaking away from the Antarctic Ice Shelf.