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A rift has formed in the shelf of floating ice in front of the Pine Island Glacier (PIG). The surface crack in the PIG runs for almost 30km (20 miles), is 60m (200ft) deep and is growing every day. US space agency (Nasa) researchers expect the eventual iceberg to cover about 880 sq km – an area the size of Berlin. It should break away towards the end of the year or early in 2012. Read More
