Page last updated at 11:56 GMT, Wednesday, 29 April 2009 12:56 UK

Global warming 'moves Alps border'

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Wars used to define the borders between countries but now global warming is causing two countries in Europe to redraw the boundary between them.

Italy and Switzerland have always relied on a very distinguishing mark to separate them, the Monte Rosa mountains in the Alps, but melting glaciers mean the division is not so clear any more.

Kathy Harcombe reports on how the two countries are having to re-define the line.

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