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A huge chunk of ice has broken off a glacier bordering Greenland in what scientists are calling the biggest event in the Arctic in nearly half a century.

The chunk is now headed for the Nares Strait, the shipping waterway between Greenland and Canada, where it could fuse to nearby land.

While thousands of icebergs calve off Greenland's glaciers annually, the rare size of this one has left scientists scrambling to understand the implications.

Al Jazeera's Charlie Angela reports.

Source: Al Jazeera