A "Game of Thrones style" wall of ice is on the move

An iceberg the size of Rhode Island is in motion. Dubbed "A23," the world's largest and oldest iceberg calved from Antarctica's Filchner Ice Shelf in 1986 but remained grounded until 2010. After breaking free, A23's slow journey north was delayed again by an ocean vortex that kept it spinning for months. — Read the rest

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