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Massive iceberg breaks off glacier in Greenland (VIDEO)

The iceberg is 46 square miles and was separated from the Petermann Glacier, which already let go of an iceberg twice that size two years earlier.

big damn icebergEnlarge
Iceberg breaks off the glacier in Greenland in a sign of climate change. (Uriel Sinai/Getty Images)

An iceberg twice the size of Manhattan broke off one of Greenland's largest glaciers, reported the Associated Press.

The iceberg is 46 square miles and was separated from the Petermann Glacier, which already let go of an iceberg twice that size two years earlier.

Scientists have watched the glacier form cracks over several years and expected the event.

Though global warming may be to blame, scientists will not speculate.

The Christian Science Monitor said that Greenland's southern glaciers have been melting at an unusually rapid pace.

This break-up offers evidence the same might be happening further north.

The last iceberg that calved from the Petermann occured in 2010 and was one of the largest ice islands ever created.

http://www.globalpost.com/dispatch/news/science/120717/massive-iceberg-breaks-glacier-greenland-video