Niagara falls
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Cascades of ice as Niagara Falls freezes

10 January 2014 Last updated at 09:18 GMT

Plummeting temperatures in the Unites States and Canada have caused chaos for many but have created a spectacular sight at Niagara Falls.

Visitors who normally see a thundering waterfall have travelled to see part of the cascades frozen solid.

Charlie Stayt explains.

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