Page last updated at 02:06 GMT, Sunday, 5 April 2009 03:06 UK

Antarctic ice bridge splits


Scientists say a thin bridge of ice off the coast of Antarctica has splintered, warning it could cause the collapse of a larger ice shelf behind it.

The British Antarctic Survey's David Vaughan explained the significance of the changes to the Wilkins Ice Shelf, saying it was a "really strong indication that warming is having an effect".


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